Current weather · Oct 1, 8:04 AM EDT

35.2070, -85.2860

60°

SunnyFeels like 60° · Humidity 87%NWS forecast for this hour; no recent station reportForecast by NWS Morristown, TN · grid 24,14
High
83°
Low
60°
Rain today
0%
Sunrise
7:36 AM
Sunset
7:25 PM

Hour by hour

NWS forecast grid

Scroll sideways for more hours. Pick an hour for every number.

Every hour as a table48 hours
TimeWeatherTemperatureFeels likeDew pointHumidityChanceAmountSnowDirWindGustSky coverThunderPressureVisibilityCeiling
Thu 8 AM60°60°56°87%0%S2 mph6 mph11%0.01 inHg—-100 ft
Thu 9 AM63°63°58°84%0%SSE3 mph8 mph12%0.01 inHg—-100 ft
Thu 10 AM68°68°61°78%0%SSE3 mph9 mph16%0.01 inHg—-100 ft
Thu 11 AM72°72°63°73%0%S5 mph12 mph17%0.01 inHg—-100 ft
Thu 12 PM75°75°63°66%0%S6 mph13 mph3%0.01 inHg—-100 ft
Thu 1 PM78°78°63°60%0%S6 mph14 mph9%0.01 inHg—-100 ft
Thu 2 PM80°81°63°56%0%S7 mph14 mph19%0.01 inHg—-100 ft
Thu 3 PM81°82°62°53%0%S6 mph14 mph20%0.01 inHg—-100 ft
Thu 4 PM81°82°62°53%0%S6 mph14 mph36%0.01 inHg—-100 ft
Thu 5 PM82°83°62°51%0%S6 mph13 mph30%0.01 inHg—-100 ft
Thu 6 PM81°82°62°53%0%SSE6 mph13 mph26%0.01 inHg—-100 ft
Thu 7 PM78°78°62°58%0%SSE5 mph12 mph35%0.01 inHg—-100 ft
Thu 8 PM76°76°62°62%0%SSE5 mph12 mph36%0.01 inHg—-100 ft
Thu 9 PM73°73°62°68%0%S6 mph12 mph33%0.01 inHg—-100 ft
Thu 10 PM71°71°62°73%0%S6 mph12 mph22%0.01 inHg—-100 ft
Thu 11 PM70°70°62°76%0%S6 mph13 mph22%0.01 inHg—-100 ft
Fri 12 AM69°69°61°76%0%S6 mph12 mph19%0.01 inHg—-100 ft
Fri 1 AM68°68°61°78%0%SSW6 mph12 mph23%0.01 inHg—-100 ft
Fri 2 AM68°68°61°78%0%S6 mph12 mph19%1%0.01 inHg—-100 ft
Fri 3 AM68°68°61°78%0%S6 mph12 mph15%1%0.01 inHg—-100 ft
Fri 4 AM67°67°61°81%0%SSW6 mph12 mph22%1%0.01 inHg—-100 ft
Fri 5 AM66°66°61°84%1%S5 mph10 mph47%1%0.01 inHg—-100 ft
Fri 6 AM66°66°61°84%0%S5 mph9 mph41%0.01 inHg—-100 ft
Fri 7 AM65°65°61°87%1%S3 mph8 mph40%1%0.01 inHg—-100 ft
Fri 8 AM65°65°62°90%1%S3 mph7 mph32%1%0.01 inHg—-100 ft
Fri 9 AM67°67°63°87%0%S3 mph8 mph35%0.01 inHg—-100 ft
Fri 10 AM72°72°65°79%0%S3 mph10 mph35%0.01 inHg—-100 ft
Fri 11 AM75°75°66°74%1%S5 mph12 mph20%1%0.01 inHg—-100 ft
Fri 12 PM77°77°67°71%4%SSW6 mph12 mph27%4%0.01 inHg—-100 ft
Fri 1 PM80°82°67°65%4%SSW6 mph13 mph49%4%0.01 inHg—-100 ft
Fri 2 PMSlight chance of thunderstorms and slight chance of light rain showers81°83°67°63%18%0.00 inSSW5 mph13 mph62%18%0.01 inHg—11,000 ft
Fri 3 PMChance of light rain showers and slight chance of thunderstorms81°83°67°63%26%0.00 inSSW5 mph12 mph51%23%0.01 inHg—-100 ft
Fri 4 PMChance of light rain showers and slight chance of thunderstorms82°84°66°58%27%0.00 inSW3 mph10 mph54%23%0.01 inHg—-100 ft
Fri 5 PMChance of thunderstorms and chance of light rain showers81°83°66°60%27%0.00 inWSW3 mph9 mph40%27%0.01 inHg—-100 ft
Fri 6 PMChance of thunderstorms and chance of light rain showers79°79°66°64%47%0.00 inWSW3 mph8 mph62%32%0.01 inHg—
Fri 7 PMChance of thunderstorms and chance of light rain showers77°77°66°69%48%0.00 inWSW2 mph8 mph79%32%0.01 inHg—
Fri 8 PMChance of light rain showers and slight chance of thunderstorms73°73°67°81%33%0.00 inW2 mph7 mph75%24%0.01 inHg—
Fri 9 PMChance of light rain showers and slight chance of thunderstorms71°71°67°87%33%0.00 inNW3 mph7 mph64%24%0.01 inHg—
Fri 10 PMChance of light rain showers and slight chance of thunderstorms70°70°67°90%33%0.00 inNNW3 mph7 mph64%24%0.01 inHg—
Fri 11 PMChance of light rain showers69°69°67°93%33%0.00 inN3 mph7 mph63%9%0.01 inHg—
Sat 12 AMChance of light rain showers68°68°67°97%33%0.00 inN3 mph7 mph65%9%0.01 inHg—
Sat 1 AMChance of light rain showers67°67°66°97%33%0.00 inNNE3 mph6 mph68%9%0.01 inHg—
Sat 2 AMChance of light rain showers67°67°66°97%44%0.01 inNNE3 mph6 mph70%9%0.01 inHg—
Sat 3 AMChance of light rain showers67°67°66°97%44%0.01 inNNE3 mph6 mph74%9%0.01 inHg—
Sat 4 AMChance of light rain showers67°67°66°97%44%0.01 inNNE3 mph7 mph78%9%0.01 inHg—
Sat 5 AMChance of light rain showers67°67°66°97%44%0.01 inNNE3 mph7 mph82%9%0.01 inHg—
Sat 6 AMChance of light rain showers66°66°66°100%44%0.01 inNNE3 mph7 mph82%9%0.01 inHg—
Sat 7 AMChance of light rain showers66°66°66°100%44%0.01 inNE3 mph7 mph83%9%0.01 inHg—

The next 16 days

NWS grid published Oct 1, 7:06 AM EDT to day 8, the National Blend of Models to day 10, the mean of GFS, ECMWF, ECMWF AI to day 16
  1. TodayOct 183°60°Sunny0%wind 7 mph · gusts 14 mph
  2. FriOct 283°66°Mostly Sunny then Slight Chance Showers And Thunderstorms48%0.02 inwind 6 mph · gusts 13 mph
  3. SatOct 378°65°Showers And Thunderstorms Likely69%0.31 inwind 5 mph · gusts 10 mph
  4. SunOct 470°59°Showers And Thunderstorms82%1.19 inwind 5 mph
  5. MonOct 574°52°Slight Chance Rain Showers then Mostly Sunny31%0.12 inwind 9 mph · gusts 23 mph
  6. TueOct 672°50°Sunny5%wind 9 mph · gusts 23 mph
  7. WedOct 771°51°Sunny4%wind 2 mph · gusts 9 mph
  8. ThuOct 875°53°6%wind 3 mph · gusts 9 mph
  9. FriOct 976°54°National Blend6%wind 3 mph · gusts 10 mph
  10. SatOct 1074°55°National Blend22%0.21 inwind 3 mph · gusts 10 mph
  11. SunOct 11~63°60°Model mean1.11 in
  12. MonOct 12~69°60°Model mean0.15 in
  13. TueOct 13~65°48°Model mean
  14. WedOct 14~69°46°Model mean
  15. ThuOct 15~67°44°Model mean
  16. FriOct 16~67°48°Model mean

Right now

NWS grid for this hour · UV from the EPA · air quality from AirNow
  • Feels like60°
  • WindS 2 mphgusts 6 mph
  • Radar over this pointno reading
  • Humidity87%
  • Dew point56°
  • Pressure0.01 inHg
  • UV index—
  • Air quality—
  • Visibility—
  • Sunrise and sunsetSunrise · Sunset
  • Moonrise10:45 PMMoonset 1:13 PM
  • Moon phaseWaning gibbous74% lit

The National Blend of Models

NOAA NBM v5.0 · run of Oct 1, 2:00 AM EDT

NOAA’s weighted blend of every model it runs, to eleven days, with the chances the grid above does not carry. Where the local office’s grid reaches, its figure sits beneath the blend’s; where it does not, the blend stands alone.

  1. TodayOct 183°65°NWS grid 83° / 60°rain 1%wind 7 mph · gusts 14 mph
  2. FriOct 283°66°NWS grid 83° / 66°rain 54%thunder 34%0.05 inwind 6 mph · gusts 13 mph
  3. SatOct 378°65°NWS grid 78° / 65°rain 72%thunder 30%0.35 inwind 5 mph · gusts 10 mph
  4. SunOct 470°59°NWS grid 70° / 59°rain 84%thunder 35%1.28 inwind 5 mph
  5. MonOct 574°52°NWS grid 74° / 52°rain 20%0.09 inwind 13 mph · gusts 23 mph
  6. TueOct 672°51°NWS grid 72° / 50°rain 6%wind 13 mph · gusts 22 mph
  7. WedOct 771°51°NWS grid 71° / 51°rain 4%wind 5 mph
  8. ThuOct 875°53°NWS grid 75° / 53°rain 6%wind 2 mph · gusts 9 mph
  9. FriOct 976°54°Beyond the NWS gridrain 6%wind 3 mph · gusts 10 mph
  10. SatOct 1074°55°Beyond the NWS gridrain 22%0.21 inwind 3 mph · gusts 10 mph
  11. SunOct 1174°—Beyond the NWS gridrain 26%0.39 inwind 5 mph · gusts 10 mph
50°68°86°FriSatSunMonTueWedThu

BlendNWS gridChance of rain, hourly

The models, side by side

HRRR Oct 1, 2:00 AM EDT · GFS Oct 1, 2:00 AM EDT · GEFS Sep 30, 8:00 PM EDT · ECMWF Sep 30, 8:00 PM EDT · ECMWF AI Sep 30, 8:00 PM EDT

Each line is one model’s own forecast at its own grid cell: three kilometers for HRRR, a quarter of a degree for the global models, which can sit a few hundred meters above or below the town. Where they agree the forecast is settled; where they part is where it is not.

50°73°95°FriSatSunMonTueWedThu

DayNWS gridHRRRGFSGEFSECMWFECMWF AI
Today Oct 183° 60°83° 62°84° 60°83° 58°~76° 73°~84° 79°
Fri Oct 283° 66°0.02 in83° 67°83° 66°0.20 in83° 64°0.18 in86° 67°0.04 in~83° 67°0.10 in
Sat Oct 378° 65°0.31 in~71° 68°71° 66°0.17 in77° 66°0.34 in~73° 68°0.13 in~77° 69°0.26 in
Sun Oct 470° 59°1.19 in—68° 65°1.02 in69° 66°1.06 in76° 67°0.06 in~72° 68°0.44 in
Mon Oct 574° 52°0.12 in—77° 59°74° 60°0.18 in~77° 62°~77° 58°
Tue Oct 672° 50°—75° 56°70° 52°78° 55°~75° 52°
Wed Oct 771° 51°—76° 55°69° 51°0.14 in~77° 56°~76° 53°
Thu Oct 875° 53°—78° 55°74° 52°0.07 in~80° 56°~80° 54°
Fri Oct 9——78° 56°74° 53°0.04 in~81° 59°~74° 56°
Sat Oct 10——77° 56°72° 54°0.26 in~79° 60°0.11 in~63° 58°
Sun Oct 11——~62° 59°0.58 in—~60° 56°1.22 in~67° 64°1.53 in
Mon Oct 12——~63° 54°0.33 in—~72° 61°0.04 in~72° 64°0.08 in
Tue Oct 13——~66° 40°—~72° 57°~56° 47°
Wed Oct 14——~71° 45°—~75° 55°~60° 38°
Thu Oct 15——~68° 48°—~67° 62°0.46 in~67° 40°
Fri Oct 16——~67° 48°———

A ~ marks a high or low read from six-hourly steps, which miss the true extreme by a degree or two.

ECMWF ensemble meteogram

ECMWF ensemble meteogram for this place: box plots of cloud cover, precipitation, wind speed and temperature from the 51 ensemble members for ten days.
Rendered by ECMWF from its 51-member ensemble, in metric units: each box spans the middle half of the members, the whiskers the rest, the line the control run. A forecast, not an observation. © ECMWF, CC BY 4.0.

The next 90 days

NOAA GHCN normals and records at Chattanooga/Lovell (CHA) · Climate Prediction Center outlooks

No forecast has skill day by day past about two weeks, and this page does not print one. Where the models stop, the calendar takes over: the 1991 to 2020 normal for each date, the record high and low ever set on it, and where the Climate Prediction Center leans warm, cool, wet or dry over the coming weeks, the month and the season. A site that shows a high for a date three months out is showing you this normal with a wobble.

The forecast reaches Fri Oct 16, from the NWS grid, then the National Blend, then the mean of the global models. Beyond it the lines are the calendar.

0°20°40°60°80°100°TodayNov 1Dec 1

Forecast high and lowNormal high and lowRecord high and low

Week ofNormalWarmest on recordColdest on recordTemperature leanPrecipitation lean
Oct 179° / 56°100° (2019)33° (1974)no outlookno outlook
Oct 877° / 55°92° (1939)30° (1988)no outlookno outlook
Oct 1572° / 48°90° (2016)27° (1948)no outlookno outlook
Oct 2269° / 48°88° (1939)24° (1952)no outlookno outlook
Oct 2968° / 46°86° (2016)19° (1954)no outlookno outlook
Nov 564° / 41°84° (2005)22° (1952)no outlookno outlook
Nov 1260° / 39°81° (1989)14° (1940)no outlookno outlook
Nov 1961° / 39°79° (2025)4° (1950)no outlookno outlook
Nov 2658° / 38°79° (1990)15° (1938)no outlookno outlook
Dec 354° / 35°78° (1951)13° (1977)no outlookno outlook
Dec 1053° / 37°77° (2007)-2° (1962)no outlookno outlook
Dec 1751° / 34°74° (1978)4° (1989)no outlookno outlook
Dec 2452° / 33°78° (2025)-2° (1983)no outlookno outlook

Health and activities

Rules of thumb over the next 24 hours of forecast, the warnings in force, the station’s report, air quality and pollen

None of these is a measurement. Each is a rating of the forecast ahead, and of what is happening at the point right now, against what the activity or the ailment is known to mind, and each names the figure that decided it. An ailment or a pest is rated as a risk, low to extreme; an activity, a chore or a journey as a condition, poor to ideal.

Each rating says which span it is for: the rest of today’s daylight, tonight, or the next 24 hours.

Health

  • Arthritisnext 24 hModeratehumid
  • Sinus pressurenext 24 hLowsteady conditions
  • Common coldtodayLowmild
  • FlutodayLowmild
  • Migrainenext 24 hLowsteady conditions
  • Asthmanext 24 hLowclean air
  • Heat stresstodayLowmild
  • SunburntodayLowweak sun
  • Frostbitenext 24 hLowmild
  • SleepingtonightIdealcool, quiet night

Outdoors

  • RunningtodayGoodhot
  • HikingtodayIdealfine conditions
  • BikingtodayIdealfine conditions
  • GolftodayIdealfine conditions
  • FishingtodayIdealfine conditions
  • Boating and paddlingtodayIdealfine conditions
  • Beach and pooltodayIdealfine conditions
  • CampingtonightIdealfine conditions
  • StargazingtonightGoodbright moon

Travel

  • Air travelnext 24 hIdealclear skies
  • Drivingnext 24 hIdealclear roads

Home and garden

  • Lawn mowingtodayIdealfine conditions
  • GardeningtodayIdealfine conditions
  • Outdoor entertainingtodayIdealfine conditions
  • Drying laundry outsidetodayIdealfine conditions
  • Painting and outdoor projectstodayIdealfine conditions
  • FrosttonightLowmild

Pests

  • MosquitoestodayHighwarm
  • TickstodayVery highwarm
  • Indoor pestsnext 24 hLowmild
  • Outdoor peststodayHighwarm

Stargazing

Worked out from the NWS hourly forecast and the sun and moon

Tonight has no dark, clear hour without a bright moon in this forecast. Rated fair.

Night ofRatingDarkClear hoursClear and moonlessMoon litTransparency (est.)DewStrongest wind
ThursdayFair8:49 PM to 6:13 AM3 of 9None70%Fair6 mph
FridayPoor8:48 PM to 6:13 AM0 of 9None60%8 h3 mph
SaturdayPoor8:46 PM to 6:14 AM0 of 9None50%9 h5 mph
SundayPoor8:45 PM to 6:15 AM0 of 9None39%9 h5 mph
MondayGood8:43 PM to 6:16 AM9 of 96 h from 9:00 PM29%Fair9 mph
TuesdayGood8:42 PM to 6:17 AM9 of 99 h from 9:00 PM20%Fair2 mph
WednesdayGood8:41 PM to 6:17 AM4 of 94 h from 2:00 AM12%Poor0 mph

Dark is the sun 18 degrees below the horizon; where it never gets that low, 12 degrees, marked nautical. Clear is sky cover of 20% or less. A bright moon is one above the horizon with a quarter or more of its disc lit. Transparency in the table is estimated from surface humidity (70% and 85% mark fair and poor) and visibility, since the forecast carries no haze or high cloud moisture. Seeing and transparency by hour, where shown, are Environment and Climate Change Canada’s astronomy forecast (regional model; seeing from cloud, wind shear, turbulence near the ground and the surface temperature trend; transparency from the moisture through the whole air column), under the Open Government Licence - Canada. Dew is the air within 2 °C of its dew point. Excellent is four or more clear moonless hours with good transparency; good is three; fair is one, or two clear hours.

Golden hour and blue hour

Computed from the sun and moon positions
DayBlue hour, morningGolden hour, morningGolden hour, eveningBlue hour, evening
Thu7:11 AM to 7:21 AM7:21 AM to 8:10 AM6:51 PM to 7:40 PM7:40 PM to 7:50 PM
Fri7:11 AM to 7:21 AM7:21 AM to 8:11 AM6:50 PM to 7:39 PM7:39 PM to 7:49 PM
Sat7:12 AM to 7:22 AM7:22 AM to 8:11 AM6:48 PM to 7:38 PM7:38 PM to 7:47 PM
Sun7:13 AM to 7:23 AM7:23 AM to 8:12 AM6:47 PM to 7:36 PM7:36 PM to 7:46 PM
Mon7:14 AM to 7:24 AM7:24 AM to 8:13 AM6:46 PM to 7:35 PM7:35 PM to 7:45 PM
Tue7:15 AM to 7:24 AM7:24 AM to 8:14 AM6:44 PM to 7:33 PM7:33 PM to 7:43 PM
Wed7:15 AM to 7:25 AM7:25 AM to 8:15 AM6:43 PM to 7:32 PM7:32 PM to 7:42 PM
NESWSRSSMRMS
  • SR Sunrise 7:36 AM, 93° E
  • SS Sunset 7:25 PM, 266° W
  • MR Moonrise 10:45 PM, 55° NE
  • MS Moonset 1:13 PM, 304° NW
  • Waning gibbous, 74% lit

Golden hour is the sun between 6 degrees above the horizon and 4 degrees below it; blue hour is the sun between 4 and 6 degrees below. These are the definitions timeanddate.com and PhotoPills use. Directions are degrees clockwise from true north, where the sun’s upper edge and the moon’s center cross a flat horizon; hills and buildings change both. None means the sun does not reach that height on the day; all day means it stays inside the band.

Drone flying

NWS hourly forecast, SWPC Kp, FAA TFRs and 14 CFR Part 107

This hour: no-fly (low cloud limits height (107.51)). No stretch of two good hours in the next three days.

Today: civil twilight for Part 107 7:06 AM to sunrise 7:36 AM, and sunset 7:25 PM to 7:55 PM. Anti-collision lighting is required in those minutes and at night.

Thu12 PM6 PM
Fri12 AM6 AM12 PM6 PM
Sat12 AM6 AM12 PM6 PM

Good Caution No-fly

HourVerdictWind (mph)400 ft est. (mph)Gust (mph)RainVisibilityCloud allowsTempKpWhy
Thu 8 AMNo-fly2360%up to 0 ft60°low cloud limits height (107.51)
Thu 9 AMNo-fly3490%up to 0 ft63°low cloud limits height (107.51)
Thu 10 AMNo-fly34100%up to 0 ft68°low cloud limits height (107.51)
Thu 11 AMNo-fly55120%up to 0 ft72°low cloud limits height (107.51)
Thu 12 PMNo-fly67140%up to 0 ft75°low cloud limits height (107.51)
Thu 1 PMNo-fly67150%up to 0 ft78°low cloud limits height (107.51)
Thu 2 PMNo-fly78150%up to 0 ft80°low cloud limits height (107.51)
Thu 3 PMNo-fly67150%up to 0 ft81°low cloud limits height (107.51)
Thu 4 PMNo-fly67150%up to 0 ft81°low cloud limits height (107.51)
Thu 5 PMNo-fly67140%up to 0 ft82°low cloud limits height (107.51)
Thu 6 PMNo-fly67140%up to 0 ft81°low cloud limits height (107.51)
Thu 7 PMNo-fly518250%up to 0 ft78°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Thu 8 PMNo-fly518250%up to 0 ft76°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Thu 9 PMNo-fly623290%up to 0 ft73°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Thu 10 PMNo-fly623290%up to 0 ft71°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Thu 11 PMNo-fly623300%up to 0 ft70°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Fri 12 AMNo-fly623290%up to 0 ft69°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Fri 1 AMNo-fly623290%up to 0 ft68°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Fri 2 AMNo-fly623290%up to 0 ft68°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Fri 3 AMNo-fly623290%up to 0 ft68°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Fri 4 AMNo-fly623290%up to 0 ft67°gusts near or over your limit, low cloud limits height (107.51), wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Fri 5 AMNo-fly518241%up to 0 ft66°low cloud limits height (107.51), wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Fri 6 AMNo-fly518230%up to 0 ft66°low cloud limits height (107.51), wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Fri 7 AMNo-fly314181%up to 0 ft65°low cloud limits height (107.51), gusts near or over your limit, night: lighting and night training required (107.29)

Flight restrictions nearby

Reading the FAA’s temporary flight restrictions.

Flight restrictions on the map. TFRs are not the whole picture: controlled airspace around airports needs LAANC authorization. Check the FAA’s B4UFLY.

Wind at 400 ft is estimated from the 10 m forecast by the power law, with exponents for each Pasquill stability class (Irwin 1979, rural, as in EPA dispersion models; the class from wind, sun height and cloud, after Turner 1970); gusts keep the ground gust’s margin. Caution from three quarters of your limit; the default 24 mph is the wind resistance printed for common sub-250 g drones. 14 CFR 107.51: “The minimum flight visibility, as observed from the location of the control station must be no less than 3 statute miles” and at least “500 feet below the cloud”. 14 CFR 107.29: “No person may operate a small unmanned aircraft system during periods of civil twilight unless the small unmanned aircraft has lighted anti-collision lighting visible for at least 3 statute miles”; civil twilight is the 30 minutes before sunrise and after sunset, in Alaska the Air Almanac’s. Kp: SWPC’s scales say satellite navigation problems may occur at G3 (Kp 7) and navigation is “degraded for hours” at G4 (Kp 8); Kp 5 is the typical app warning. Typical limits, not rules: rain chance 30% caution and 60% no-fly, thunder 10% and 20%, below 0 °C caution and −10 °C no-fly, over 40 °C caution. Your drone’s manual and the airspace come first.

Spraying and field work

Worked out from the NWS hourly forecast

Hours fit for spraying, and the days dry enough for fieldwork and hay, read from this forecast’s wind, gusts, humidity, temperature and rain.

Spraying windows

  • Thu 10 AM to Fri 5 AM 19 hours, every hour within the rules
  • Fri 10 AM to 2 PM 4 hours, every hour within the rules
  • Mon 1 PM to 7 PM 6 hours, every hour within the rules
  • Tue 10 AM to 2 PM 4 hours, every hour within the rules
  • Thu 1 PM to 4 PM 3 hours, every hour within the rules
Thu12 PM6 PM
Fri12 AM6 AM12 PM6 PM
Sat12 AM6 AM12 PM6 PM
Sun12 AM6 AM12 PM6 PM

Good Marginal No

Field days

DayDaytimeChance of rainRainLowest humidityStrongest windDry days in a rowHay drying
ThursdayDry0%0.00 in51%7 mph1 d
FridayShowers possible48%0.02 in58%6 mph
SaturdayWet69%0.31 in87%3 mph
SundayWet82%1.19 in97%3 mph
MondayShowers possible8%0.12 in59%8 mph
TuesdayDry5%0.00 in59%7 mph3 d
WednesdayDry4%0.00 in57%2 mph2 d
ThursdayDry6%0.00 in48%3 mph1 d

Spraying: sustained wind 3 to 10 mph, the range US extension services and most labels give; gusts no more than 15 mph (this page’s limit); delta T (air minus wet-bulb temperature) 2 to 8 °C preferred and 8 to 10 °C marginal, from GRDC guidance, with the wet bulb by Stull’s formula; no hour at a 30% chance of rain or 0.25 mm forecast during the rain-free time. Follow the product label, which overrides all of this. Field days: dry is no daytime hour at a 30% chance and under 1 mm all day, wet is 6 mm (0.25 in) or more; soil moisture is not in the forecast, so ground still wet from earlier rain is not accounted for. Hay drying marks a dry day with humidity down to 50% and a breeze of 5 mph or more.

Solunar times

Computed from the moon’s position

The best-rated day this week is Thursday, rated fair.

DayRatingMajor periodsMinor periodsMoonSunrise, sunset
Thu Fair4:28 AM to 6:28 AM4:59 PM to 6:59 PM12:43 PM to 1:43 PM10:15 PM to 11:15 PM 74%7:36 AM, 7:25 PM
Fri Fair5:31 AM to 7:31 AM6:02 PM to 8:02 PM1:48 PM to 2:48 PM11:18 PM to 12:18 AM 64%7:37 AM, 7:23 PM
Sat Fair6:33 AM to 8:33 AM7:04 PM to 9:04 PM2:43 PM to 3:43 PM 54%7:38 AM, 7:22 PM
Sun Fair7:33 AM to 9:33 AM8:02 PM to 10:02 PM12:28 AM to 1:28 AM3:30 PM to 4:30 PM 43%7:38 AM, 7:21 PM
Mon Fair8:29 AM to 10:29 AM8:56 PM to 10:56 PM1:40 AM to 2:40 AM4:08 PM to 5:08 PM 33%7:39 AM, 7:19 PM
Tue Poor9:21 AM to 11:21 AM9:46 PM to 11:46 PM2:51 AM to 3:51 AM4:41 PM to 5:41 PM 23%7:40 AM, 7:18 PM
Wed Fair10:10 AM to 12:10 PM10:33 PM to 12:33 AM3:59 AM to 4:59 AM5:10 PM to 6:10 PM 15%7:41 AM, 7:17 PM

Periods in bold fall within an hour of sunrise or sunset. The weather’s side is the fishing index

Major periods are two hours centered on the moon’s passage overhead and underfoot; minor periods are one hour centered on moonrise and moonset: the conventional durations of John Alden Knight’s solunar tables (1936). The rating is this site’s: one point to start, two more within a day and a half of a new or full moon (one more within three and a half days), and one more when a period falls within an hour of sunrise or sunset. The theory has mixed support in fisheries research; the times are exact astronomy.

In words

NWS forecast periods, as issued
  1. Today83° · S 0–5 mph

    Sunny, with a high near 83. South wind 0 to 5 mph.

  2. Tonight65° · 1% · S 5 mph

    Partly cloudy, with a low around 65. South wind around 5 mph.

  3. Friday83° · 27% · SW 5 mph

    A slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

  4. Friday Night66° · 48% · NW 0–5 mph

    A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Northwest wind 0 to 5 mph. Chance of precipitation is 50%.

  5. Saturday78° · 69% · NE 0–5 mph

    A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 78. Northeast wind 0 to 5 mph. Chance of precipitation is 70%.

  6. Saturday Night65° · 71% · E 0–5 mph

    Showers and thunderstorms likely. Mostly cloudy, with a low around 65. East wind 0 to 5 mph. Chance of precipitation is 70%.

  7. Sunday70° · 82% · E 0–5 mph

    Showers and thunderstorms. Mostly cloudy, with a high near 70. East wind 0 to 5 mph. Chance of precipitation is 80%.

  8. Sunday Night59° · 68% · N 0–5 mph

    Showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

  9. Monday74° · 20% · N 5–10 mph

    A slight chance of rain showers before 8am. Mostly sunny, with a high near 74. Chance of precipitation is 20%.

  10. Monday Night52° · 6% · N 5–10 mph

    Mostly clear, with a low around 52.

  11. Tuesday72° · 5% · NE 0–10 mph

    Sunny, with a high near 72.

  12. Tuesday Night50° · 5% · 0 mph

    Mostly clear, with a low around 50.

  13. Wednesday71° · 4% · 0 mph

    Sunny, with a high near 71.

  14. Wednesday Night51° · 4% · 0 mph

    Mostly clear, with a low around 51.

The forecaster’s discussion

NWS Morristown, TN · issued Oct 1, 7:33 AM EDT

Written by the forecaster on duty for their own colleagues and for anyone who wants to know why the forecast says what it says. It is not edited for the public, so it uses the office’s shorthand; it is also the most honest thing any weather service publishes.

KEY Messages

Updated at 644 AM EDT Thu Oct 1 2026

Dry and abnormally warm conditions are expected today with highs well into the 80s to low 90s in the south.

Chances for showers and isolated storms will increase tomorrow and through the weekend with locally heavy rainfall possible.

Drier and cooler conditions will return next week.

Discussion

1240 AM EDT Thu Oct 1 2026

Upper level ridging currently pinches up the SE CONUS with surface high pressure centered just off of the Mid- Atlantic. One last day of area-wide dry weather and abnormally hot temperatures today, as a closed low within the pattern eventually phases with the trough with its eastward progression. A frontal system currently stretching north into the TX and OK panhandles, will be knocking on our doorstep as we welcome the first weekend of October. With the surface high pressure situated to the east, southerly flow will bring a marked return of higher dew points this afternoon compared to yesterday.

Moisture surrounds the area during the early morning hours tomorrow to our west and south. The frontal system is forecast to enter the Mississippi Valley around that time. Although tomorrow starts out dry, precipitation chances increase the further we get into the day. The frontal system does cross the area sometime late tomorrow into early Saturday, however, it will become stationary just to our south and not totally clear the area until possibly later Sunday. What this means will be periods of wet weather for the entire area this weekend. So far, a marginal risk for flash flooding is in place. With the highest FFG across our southern areas, some places could have the capacity to absorb a lot of the rainfall not bringing much of a threat unless training occurs with consecutive heavy showers/storms. Right now, Sunday has the heaviest rainfall accumulation as the low center moves overhead as it begins to push out. Forecast PWATs at this time do show values nearing or going just above 2 inches which would be conducive for heavy rain makers. As far as any storms, there isn't a severe threat, but there could be embedded storms. Instability overall will be lacking. The greatest threat this weekend will be heavy rain with the possibility of localized flash flooding. Grand total QPF amounts, though being fine tuned with each forecast, show the entire forecast area seeing at least one inch of rain. Some areas could see over two, possibly up to 3 inches when everything is said and done. Due to overall uncertainty of amounts still, high FFG, etc. have elected to continue with low probability of hazardous weather for Friday onward.

Rain clears the region as we enter a new work week next week. A secondary front will send everything out of here replacing it with dry weather, northerly flow, and temperatures typically recorded in early October. Surface high pressure sinks in from the north and frontal systems until the end of the period are forecast to remain well to our south and to the north, for now.

Aviation

644 AM EDT Thu Oct 1 2026

(12Z TAFS)

No significant fog so far at TRI this morning, but as is often the case this time of year it is still possible it could drift over the terminal from nearby Boone Lake briefly before dissipating. Same concern for possibility of fog late tonight at TRI, but will lean toward a persistence forecast for now (no fog). Will have a VFR forecast for the period all sites. Winds will generally be light.

Preliminary Point Temps / Pops

Chattanooga Airport, TN 92 68 92 69 / 0 0 40 40 Knoxville McGhee Tyson Airport, TN 89 65 89 67 / 0 0 40 60 Oak Ridge, TN 87 64 88 66 / 0 0 50 60 Tri Cities Airport, TN 84 59 85 63 / 0 0 30 40

MRX Watches / Warnings / Advisories

NC...NONE. TN...NONE. VA...NONE.

Hazardous weather outlook Oct 1, 12:11 AM EDT

The office’s own seven-day heads-up for spotters and emergency managers.

FLUS44 KMRX 010411
HWOMRX

Hazardous Weather Outlook
National Weather Service Morristown TN
1211 AM EDT Thu Oct 1 2026

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-020415-
Cherokee-Clay-Scott TN-Campbell-Claiborne-Hancock-Hawkins-
Sullivan-Johnson-Morgan-Anderson-Union-Grainger-Hamblen-
Northwest Cocke-Cocke Smoky Mountains-Northwest Greene-
Southeast Greene-Washington TN-Unicoi-Northwest Carter-
Southeast Carter-Roane-Loudon-Knox-Jefferson-Northwest Blount-
Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains-
Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe-
Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk-Lee-
Wise-Scott VA-Russell-Washington VA-
1211 AM EDT Thu Oct 1 2026 /1111 PM CDT Wed Sep 30 2026/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not needed at this time.

$$

The outlooks beyond

SPC, WPC, CPC and the Drought Monitor, read at this point

The national centers each publish a judgment the local grid does not carry. Read here at this exact coordinate.

Reading the outlooks…

Frost and climate

NOAA 1991-2020 normals, Soddy Daisy-Mowbray Mtn

The last spring freeze (32°F) usually comes around April 7 and the first fall freeze around October 29: a growing season of about 203 days.

One fall in ten brings a freeze by October 13; one spring in ten still has one after April 28.

Climate of 35.21, -85.29: normals, records and every month

Everything else on the grid

NWS forecast grid · 26 elements

The forecast office edits about sixty fields for every cell of its grid. The common ones are above; these are the rest, as the daily extreme, for anyone who needs the mixing height, the fire danger or the swell.

ElementThuFriSatSunMonTueWedThu
HeatRisk max1 · Minor1 · Minor1 · Minor1 · Minor0 · Little0 · Little0 · Little0 · Little
Wet bulb globe temperature max77°78°75°71°70°69°67°69°
Heat index max83°84°75°70°73°71°75°
Chance of thunder max0%32%24%29%9%2%4%5%
Cloud ceiling min-100 ft-100 ft
Pressure min0.01 inHg0.01 inHg0.01 inHg0.01 inHg0.01 inHg0.01 inHg0.01 inHg0.01 inHg
Mixing height max5,500 ft6,000 ft2,900 ft1,700 ft4,300 ft3,300 ft3,700 ft4,500 ft
Transport wind max13 mph10 mph7 mph7 mph13 mph13 mph6 mph7 mph
Atmospheric dispersion index max574815843161927
Low visibility risk max6710108576

Against the record

NOAA GHCN · Chattanooga/Lovell (CHA) · 13 mi away

Each forecast day against the same calendar date at the nearest long-record station: the 1991 to 2020 normal, and the record high and low with the year they were set.

DayForecastNormalRecord highRecord low
Thu Oct 183° / 60°79° / 55°97° (2019)39° (1946)
Fri Oct 283° / 66°79° / 56°100° (2019)36° (1984)
Sat Oct 378° / 65°79° / 56°100° (2019)35° (1974)
Sun Oct 470° / 59°79° / 56°95° (2019)33° (1974)
Mon Oct 574° / 52°80° / 56°94° (1954)36° (1974)
Tue Oct 672° / 50°78° / 55°93° (1938)38° (1964)
Wed Oct 771° / 51°77° / 55°92° (1939)35° (1991)
Thu Oct 875° / 53°76° / 55°91° (1939)34° (1991)

Sun and moon

DayCivil twilightSunriseSunsetCivil twilightDaylightMoon
Thu7:11 AM7:36 AM7:25 PM7:50 PM11 h 49 min Waning gibbous · 74% lit
Fri7:11 AM7:37 AM7:23 PM7:49 PM11 h 46 min Waning gibbous · 64% lit
Sat7:12 AM7:38 AM7:22 PM7:47 PM11 h 44 min Last quarter · 54% lit
Sun7:13 AM7:38 AM7:21 PM7:46 PM11 h 43 min Last quarter · 43% lit
Mon7:14 AM7:39 AM7:19 PM7:45 PM11 h 40 min Waning crescent · 33% lit
Tue7:15 AM7:40 AM7:18 PM7:43 PM11 h 38 min Waning crescent · 23% lit
Wed7:15 AM7:41 AM7:17 PM7:42 PM11 h 36 min Waning crescent · 15% lit
Thu7:16 AM7:42 AM7:15 PM7:41 PM11 h 33 min Waning crescent · 8% lit

Forecast from the National Weather Service forecast grid at api.weather.gov, updated by the local office through the day; the written periods and hourly digest are the NWS’s own. Outlooks from the Storm Prediction Center, the Weather Prediction Center and the Climate Prediction Center via NOAA’s map services. Records and normals from NOAA’s Global Historical Climatology Network. Sun and moon computed here. Place names from GeoNames (CC BY 4.0).

What is here

Seven days
The high, the low, the chance and amount of rain and snow, the wind and the forecaster’s words for each day and night, from the National Weather Service grid for the exact cell your town sits in.
Hour by hour
Temperature, what it feels like, dew point, humidity, chance and amount of precipitation, wind and gusts, sky cover, the chance of thunder, pressure, visibility and ceiling, as a chart and as a table, with nights shaded.
Everything else on the grid
The office edits about sixty fields for every cell. The ones the mainstream forecast pages leave out are here as a daily table: HeatRisk, wet bulb globe temperature, lightning activity, mixing height, transport wind, the fire weather indices, and at the coast the waves and swell.
The discussion
The Area Forecast Discussion the forecaster wrote to explain the forecast, in their own words, with the specialist annexes folded away. Also the office’s hazardous weather outlook.
Beyond the week
The Storm Prediction Center’s severe weather category for each of the next eight days, the Weather Prediction Center’s rainfall forecast to day seven and its winter storm severity, and the Climate Prediction Center’s odds for days six to fourteen, all read at your coordinate.
Against the record
Each forecast day beside the same date at the nearest long-record station: the thirty-year normal and the record high and low with their years, so a forecast high that would break a record says so.
The next 90 days
The forecast as far as the grid, the National Blend and the global models reach, and the calendar after that: the normal and the record for every date, with the Climate Prediction Center’s lean for the weeks, the month and the season drawn over them. No made-up highs for a date three months out.

Common questions

Where does this forecast come from?

From the National Weather Service forecast grid published at api.weather.gov, the same grid the local forecast office edits through the day and the source of every forecast on weather.gov. The written periods, the hourly digest and the forecaster’s discussion are the NWS’s own products, shown as issued. Nothing here is a blend a website made.

How far ahead does it go?

The grid runs seven days ahead, hour by hour for the first days and in three to six hour steps after that. The National Blend of Models carries the days to eleven and the global models to sixteen. Beyond that the page carries the national centers’ outlooks, severe weather to day eight, rainfall to day seven, and the Climate Prediction Center’s odds for the coming weeks, month and season, over a ninety-day calendar of the normal and the record for each date. No forecast has skill day by day past about two weeks, and this page does not print one.

Why is this different from the app on my phone?

Most forecast apps show a blend of models chosen by the company that makes the app. This page shows the forecast the local National Weather Service office issues, edited by the forecasters who will also issue the warnings, and it shows all of it rather than the six numbers that fit on a phone. The discussion explains the reasoning, which no app carries.

What is a place’s address here?

Every town has its own page, such as /forecast/us/oklahoma/oklahoma-city/, and every day at a town has one too. A ZIP code typed into the search goes to the town it belongs to. Any coordinate at all can be looked up, and the page names the nearest town.

What the weather actually was · Open the live radar · Where the data comes from