Current weather · Sep 27, 1:53 PM EDT

38.5260, -84.8110

69°

SunnyFeels like 69° · Humidity 55%NWS forecast for this hour; no recent station reportForecast by NWS Wilmington, OH · grid 27,11
High
71°
Low
47°
Rain today
0%
Sunrise
7:32 AM
Sunset
7:28 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
Sun 1 PM69°69°52°55%0%NNE6 mph10 mph2%—10 mi
Sun 2 PM71°71°51°50%0%N6 mph10 mph2%—10 mi
Sun 3 PM71°71°50°48%0%N6 mph12 mph2%—10 mi
Sun 4 PM71°71°49°46%0%N6 mph12 mph1%—10 mi
Sun 5 PM71°71°48°44%0%N7 mph12 mph2%—10 mi
Sun 6 PM71°71°48°44%0%N6 mph10 mph1%—10 mi
Sun 7 PM69°69°49°49%0%N5 mph8 mph2%—10 mi
Sun 8 PM65°65°48°55%0%N5 mph7 mph7%—10 mi
Sun 9 PM61°61°49°65%0%N3 mph6 mph1%—10 mi
Sun 10 PM59°59°50°72%0%N3 mph7 mph2%—10 mi
Sun 11 PM58°58°51°77%0%N3 mph7 mph3%—10 mi
Mon 12 AM57°57°52°83%0%N3 mph6 mph1%—10 mi
Mon 1 AM55°55°52°90%0%N3 mph5 mph1%—10 mi
Mon 2 AM54°54°53°96%0%N3 mph5 mph3%—10 mi
Mon 3 AM52°52°52°100%0%N2 mph5 mph1%—10 mi
Mon 4 AM52°52°52°100%0%N2 mph5 mph4%—10 mi
Mon 5 AM51°51°51°99%0%N2 mph5 mph5%—10 mi
Mon 6 AM51°51°51°99%0%N2 mph5 mph12%—10 mi
Mon 7 AM51°51°51°99%0%N2 mph5 mph19%—10 mi
Mon 8 AM51°51°51°99%0%N2 mph5 mph17%—10 mi
Mon 9 AM53°53°53°100%0%N3 mph5 mph19%—10 mi
Mon 10 AM60°60°56°87%0%N3 mph6 mph23%—10 mi
Mon 11 AM65°65°57°75%0%N3 mph7 mph10%—10 mi
Mon 12 PM69°69°57°66%0%N3 mph8 mph7%—10 mi
Mon 1 PM71°71°58°64%0%N5 mph9 mph3%—10 mi
Mon 2 PM73°73°58°59%0%N5 mph10 mph12%—10 mi
Mon 3 PM75°75°58°56%0%N6 mph10 mph18%—10 mi
Mon 4 PM75°75°57°54%0%N6 mph9 mph15%—10 mi
Mon 5 PM75°75°56°52%0%N6 mph9 mph18%—10 mi
Mon 6 PM73°73°56°54%0%N5 mph8 mph17%—10 mi
Mon 7 PM71°71°56°59%0%N3 mph6 mph15%—10 mi
Mon 8 PM66°66°54°65%0%N3 mph5 mph20%—10 mi
Mon 9 PM63°63°54°72%0%NNE3 mph3 mph24%——
Mon 10 PM61°61°55°81%0%NE3 mph5 mph16%——
Mon 11 PM60°60°55°84%0%NE3 mph5 mph20%——
Tue 12 AM59°59°56°90%0%ENE3 mph5 mph22%——
Tue 1 AM57°57°57°100%0%ENE3 mph3 mph22%——
Tue 2 AM56°56°56°100%0%ENE2 mph3 mph10%——
Tue 3 AM55°55°55°100%0%ENE2 mph3 mph7%——
Tue 4 AM55°55°55°100%0%ENE2 mph3 mph23%——
Tue 5 AM54°54°54°100%0%E2 mph3 mph26%——
Tue 6 AM54°54°54°100%0%E2 mph3 mph43%——
Tue 7 AM53°53°53°99%0%E2 mph3 mph37%——
Tue 8 AM54°54°54°100%0%E2 mph3 mph24%——
Tue 9 AM56°56°56°100%0%E2 mph3 mph50%——
Tue 10 AM62°62°59°89%0%ESE2 mph3 mph25%——
Tue 11 AM68°68°59°73%0%SE2 mph5 mph0%——
Tue 12 PM72°72°59°64%0%SE2 mph5 mph2%——

The next 16 days

NWS grid published Sep 27, 1:39 PM EDT to day 8, the National Blend of Models to day 11, the mean of GFS, ECMWF AI, ECMWF to day 16
  1. TodaySep 2771°47°Sunny0%wind 7 mph
  2. MonSep 2875°53°Sunny0%wind 6 mph
  3. TueSep 2979°57°Sunny0%wind 3 mph
  4. WedSep 3086°65°Mostly Sunny0%wind 6 mph · gusts 12 mph
  5. ThuOct 188°66°Mostly Sunny19%wind 12 mph · gusts 18 mph
  6. FriOct 275°56°Chance Rain Showers51%wind 8 mph · gusts 14 mph
  7. SatOct 369°56°Chance Rain Showers39%wind 8 mph · gusts 14 mph
  8. SunOct 469°56°41%wind 7 mph
  9. MonOct 570°52°National Blend22%0.22 inwind 8 mph · gusts 14 mph
  10. TueOct 669°53°National Blend8%wind 6 mph · gusts 12 mph
  11. WedOct 772°55°National Blend16%0.04 inwind 5 mph
  12. ThuOct 8~66°51°Model mean
  13. FriOct 9~59°41°Model mean
  14. SatOct 10~62°38°Model mean
  15. SunOct 11~70°41°Model mean
  16. MonOct 12~74°44°Model mean

Right now

NWS grid for this hour · UV from the EPA · air quality from AirNow
  • Feels like69°
  • WindNNE 6 mphgusts 10 mph
  • Radar over this pointno reading
  • Humidity55%
  • Dew point52°
  • Pressure—
  • UV index—
  • Air quality—
  • Visibility10 mi
  • Sunrise and sunsetSunrise · Sunset
  • Moonrise7:46 PMMoonset 8:32 AM
  • Moon phaseWaning gibbous99% lit

The National Blend of Models

NOAA NBM v5.0 · run of Sep 27, 8:00 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. TodaySep 2774°51°NWS grid 71° / 47°rain 0%wind 7 mph
  2. MonSep 2876°53°NWS grid 75° / 53°rain 0%wind 5 mph · gusts 10 mph
  3. TueSep 2980°59°NWS grid 79° / 57°rain 0%wind 3 mph
  4. WedSep 3084°65°NWS grid 86° / 65°rain 2%wind 6 mph · gusts 12 mph
  5. ThuOct 187°66°NWS grid 88° / 66°rain 42%0.02 inwind 10 mph · gusts 17 mph
  6. FriOct 277°60°NWS grid 75° / 56°rain 51%0.39 inwind 8 mph · gusts 14 mph
  7. SatOct 373°59°NWS grid 69° / 56°rain 45%0.89 inwind 7 mph · gusts 13 mph
  8. SunOct 472°58°NWS grid 69° / 56°rain 43%thunder 15%1.21 inwind 6 mph · gusts 12 mph
  9. MonOct 570°52°Beyond the NWS gridrain 22%0.22 inwind 8 mph · gusts 14 mph
  10. TueOct 669°53°Beyond the NWS gridrain 8%wind 6 mph · gusts 12 mph
  11. WedOct 772°55°Beyond the NWS gridrain 16%0.04 inwind 5 mph
50°73°95°MonTueWedThuFriSatSun

BlendNWS gridChance of rain, hourly

The models, side by side

HRRR Sep 27, 8:00 AM EDT · GFS Sep 27, 8:00 AM EDT · GEFS Sep 27, 2:00 AM EDT · ECMWF Sep 26, 8:00 PM EDT · ECMWF AI Sep 26, 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.

41°68°95°MonTueWedThuFriSatSun

DayNWS gridHRRRGFSGEFSECMWFECMWF AI
Today Sep 2771° 47°76° 48°75° 47°74° 47°76° 49°~76° 48°
Mon Sep 2875° 53°77° 51°78° 51°76° 50°77° 53°~78° 49°
Tue Sep 2979° 57°60° 52°82° 53°81° 53°81° 55°~80° 51°
Wed Sep 3086° 65°—89° 57°86° 56°89° 60°~86° 56°
Thu Oct 188° 66°—91° 66°88° 64°0.02 in90° 68°~89° 62°
Fri Oct 275° 56°—72° 52°0.13 in72° 61°0.36 in89° 66°0.02 in~82° 67°0.09 in
Sat Oct 369° 56°—65° 50°67° 54°0.20 in~69° 56°0.02 in~65° 57°0.19 in
Sun Oct 469° 56°—74° 43°71° 52°0.22 in~65° 62°2.12 in~65° 60°0.73 in
Mon Oct 5——76° 53°68° 55°0.41 in~70° 63°0.19 in~66° 63°0.10 in
Tue Oct 6——74° 48°64° 47°0.05 in~70° 57°~65° 60°0.09 in
Wed Oct 7——~79° 50°~48° 48°~73° 54°~71° 58°
Thu Oct 8——~58° 47°—~68° 57°0.13 in~73° 56°
Fri Oct 9——~57° 37°—~58° 42°~61° 44°
Sat Oct 10——~61° 33°—~61° 45°~64° 37°
Sun Oct 11——~69° 39°—~70° 47°~71° 37°
Mon Oct 12——~74° 44°———

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 Capital City Airport/Frankfort (FFT) · 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 Mon Oct 12, from the NWS grid, then the National Blend, then the mean of the global models. Beyond it the lines are the calendar.

Climate Prediction Center (CPC) temperature lean33%warmer 40% · Oct 202633% chance above normal · Oct to Dec0°20°40°60°80°100°TodayOct 1Nov 1Dec 1

Forecast high and lowNormal high and lowRecord high and lowCPC leans warmer than normalCPC near normal or equal chances

Week ofNormalWarmest on recordColdest on recordTemperature leanPrecipitation lean
Sep 2774° / 49°97° (2019)30° (2003)no outlookno outlook
Oct 473° / 48°91° (2007)29° (2000)near normal most likely · days 8 to 14near normal most likely · days 8 to 14
Oct 1169° / 46°86° (2010)28° (2006)40% chance above normal · Oct 2026equal chances · Oct 2026
Oct 1866° / 42°86° (2016)22° (1997)40% chance above normal · Oct 2026equal chances · Oct 2026
Oct 2560° / 41°83° (2024)24° (2001)40% chance above normal · Oct 2026equal chances · Oct 2026
Nov 162° / 38°84° (2016)20° (1996)33% chance above normal · Oct to Decequal chances · Oct to Dec
Nov 858° / 35°81° (2023)12° (2019)33% chance above normal · Oct to Decequal chances · Oct to Dec
Nov 1555° / 31°78° (2016)9° (2014)33% chance above normal · Oct to Decequal chances · Oct to Dec
Nov 2253° / 32°74° (2010)10° (2005)33% chance above normal · Oct to Decequal chances · Oct to Dec
Nov 2949° / 30°72° (2012)10° (2002)33% chance above normal · Oct to Decequal chances · Oct to Dec
Dec 647° / 29°72° (1998)4° (2010)33% chance above normal · Oct to Decequal chances · Oct to Dec
Dec 1347° / 30°68° (2015)-3° (2010)33% chance above normal · Oct to Decequal chances · Oct to Dec
Dec 2047° / 29°72° (2013)-6° (2022)33% chance above normal · Oct to Decequal chances · Oct to Dec

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

  • RunningtodayIdealfine conditions
  • HikingtodayIdealfine conditions
  • BikingtodayIdealfine conditions
  • GolftodayIdealfine conditions
  • FishingtodayIdealfine conditions
  • Boating and paddlingtodayIdealfine conditions
  • Beach and pooltodayVery goodcool
  • CampingtonightIdealfine conditions
  • StargazingtonightFairbright 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
  • TickstodayHighwarm
  • Indoor pestsnext 24 hLowmild
  • Outdoor peststodayModeratewarm

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
SundayFair8:56 PM to 6:04 AM9 of 9None98%Poor5 h3 mph
MondayFair8:55 PM to 6:05 AM4 of 9None94%Poor6 h3 mph
TuesdayFair8:53 PM to 6:06 AM7 of 9None87%Poor4 h5 mph
WednesdayPoor8:52 PM to 6:07 AM0 of 9None79%7 mph
ThursdayPoor8:50 PM to 6:08 AM0 of 9None70%7 mph
FridayPoor8:48 PM to 6:09 AM0 of 9None60%9 h8 mph
SaturdayPoor8:47 PM to 6:10 AM0 of 9None50%7 h7 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
Sun7:05 AM to 7:15 AM7:15 AM to 8:07 AM6:53 PM to 7:44 PM7:44 PM to 7:55 PM
Mon7:06 AM to 7:16 AM7:16 AM to 8:08 AM6:52 PM to 7:43 PM7:43 PM to 7:53 PM
Tue7:07 AM to 7:17 AM7:17 AM to 8:08 AM6:50 PM to 7:41 PM7:41 PM to 7:51 PM
Wed7:08 AM to 7:18 AM7:18 AM to 8:09 AM6:48 PM to 7:40 PM7:40 PM to 7:50 PM
Thu7:09 AM to 7:19 AM7:19 AM to 8:10 AM6:47 PM to 7:38 PM7:38 PM to 7:48 PM
Fri7:10 AM to 7:20 AM7:20 AM to 8:11 AM6:45 PM to 7:37 PM7:37 PM to 7:47 PM
Sat7:11 AM to 7:21 AM7:21 AM to 8:12 AM6:44 PM to 7:35 PM7:35 PM to 7:45 PM
NESWSRSSMRMS
  • SR Sunrise 7:32 AM, 92° E
  • SS Sunset 7:28 PM, 268° W
  • MR Moonrise 7:46 PM, 75° ENE
  • MS Moonset 8:32 AM, 282° WNW
  • Waning gibbous, 99% 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: good to fly. Next good stretch: Sun 1 PM to 7 PM, 6 hours.

Today: civil twilight for Part 107 7:02 AM to sunrise 7:32 AM, and sunset 7:28 PM to 7:58 PM. Anti-collision lighting is required in those minutes and at night.

Sun6 PM
Mon12 AM6 AM12 PM6 PM
Tue12 AM6 AM12 PM6 PM

Good Caution No-fly

HourVerdictWind (mph)400 ft est. (mph)Gust (mph)RainVisibilityCloud allowsTempKpWhy
Sun 1 PMGood67110%10 mi69°nothing against it
Sun 2 PMGood67110%10 mi71°nothing against it
Sun 3 PMGood67130%10 mi71°nothing against it
Sun 4 PMGood67130%10 mi71°nothing against it
Sun 5 PMGood79130%10 mi71°nothing against it
Sun 6 PMGood67120%10 mi71°nothing against it
Sun 7 PMCaution518220%10 mi69°wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Sun 8 PMCaution518210%10 mi65°wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Sun 9 PMCaution314160%10 mi61°night: lighting and night training required (107.29)
Sun 10 PMCaution314170%10 mi59°night: lighting and night training required (107.29)
Sun 11 PMCaution314170%10 mi58°night: lighting and night training required (107.29)
Mon 12 AMCaution314160%10 mi57°night: lighting and night training required (107.29)
Mon 1 AMCaution314150%10 mi55°night: lighting and night training required (107.29)
Mon 2 AMCaution314150%10 mi54°night: lighting and night training required (107.29)
Mon 3 AMCaution29110%10 mi52°night: lighting and night training required (107.29)
Mon 4 AMCaution29110%10 mi52°night: lighting and night training required (107.29)
Mon 5 AMCaution29110%10 mi51°night: lighting and night training required (107.29)
Mon 6 AMCaution29110%10 mi51°night: lighting and night training required (107.29)
Mon 7 AMCaution29110%10 mi51°night: lighting and night training required (107.29)
Mon 8 AMGood2350%10 mi51°nothing against it
Mon 9 AMGood3450%10 mi53°nothing against it
Mon 10 AMGood3460%10 mi60°nothing against it
Mon 11 AMGood3480%10 mi65°nothing against it
Mon 12 PMGood3490%10 mi69°nothing against it

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

  • Sun 1 PM to Mon 12 AM 11 hours, every hour within the rules
  • Mon 11 AM to 11 PM 12 hours, every hour within the rules
  • Tue 10 PM to Wed 12 AM 2 hours, every hour within the rules
  • Wed 10 AM to 3 PM 5 hours, some with delta T between 8 and 10 °C
  • Wed 5 PM to 7 PM 2 hours, some with delta T between 8 and 10 °C
  • Wed 10 PM to Thu 12 PM 14 hours, every hour within the rules
  • Thu 6 PM to 10 PM 4 hours, every hour within the rules
  • Sat 2 PM to 4 PM 2 hours, every hour within the rules
Sun6 PM
Mon12 AM6 AM12 PM6 PM
Tue12 AM6 AM12 PM6 PM
Wed12 AM6 AM12 PM6 PM

Good Marginal No

Field days

DayDaytimeChance of rainRainLowest humidityStrongest windDry days in a rowHay drying
SundayDry0%0.00 in44%7 mph5 dGood
MondayDry0%0.00 in52%6 mph4 d
TuesdayDry0%0.00 in49%2 mph3 d
WednesdayDry0%0.00 in37%6 mph2 dGood
ThursdayDry8%0.00 in44%12 mph1 dGood
FridayShowers possible51%0.00 in72%8 mph
SaturdayShowers possible31%0.00 in68%8 mph
SundayShowers possible41%0.00 in86%6 mph

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 Sunday, rated best.

DayRatingMajor periodsMinor periodsMoonSunrise, sunset
Sun Best12:50 AM to 2:50 AM1:14 PM to 3:14 PM8:02 AM to 9:02 AM7:16 PM to 8:16 PM 99%7:32 AM, 7:28 PM
Mon Good1:38 AM to 3:38 AM2:04 PM to 4:04 PM9:13 AM to 10:13 AM7:46 PM to 8:46 PM 95%7:32 AM, 7:27 PM
Tue Good2:30 AM to 4:30 AM2:58 PM to 4:58 PM10:26 AM to 11:26 AM8:22 PM to 9:22 PM 90%7:33 AM, 7:25 PM
Wed Poor3:26 AM to 5:26 AM3:56 PM to 5:56 PM11:41 AM to 12:41 PM9:06 PM to 10:06 PM 83%7:34 AM, 7:23 PM
Thu Fair4:26 AM to 6:26 AM4:57 PM to 6:57 PM12:53 PM to 1:53 PM10:00 PM to 11:00 PM 74%7:35 AM, 7:22 PM
Fri Fair5:29 AM to 7:29 AM6:00 PM to 8:00 PM1:58 PM to 2:58 PM11:04 PM to 12:04 AM 64%7:36 AM, 7:20 PM
Sat Fair6:31 AM to 8:31 AM7:02 PM to 9:02 PM2:53 PM to 3:53 PM 54%7:37 AM, 7:19 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. This Afternoon71° · N 7 mph

    Sunny, with a high near 71. North wind around 7 mph.

  2. Tonight51° · N 2–6 mph

    Clear, with a low around 51. North wind 2 to 6 mph.

  3. Monday75° · N 2–6 mph

    Sunny, with a high near 75. North wind 2 to 6 mph.

  4. Monday Night53° · NE 5 mph

    Mostly clear, with a low around 53. Northeast wind around 5 mph.

  5. Tuesday79° · SE 2 mph

    Sunny, with a high near 79. Southeast wind around 2 mph.

  6. Tuesday Night57° · E 5 mph

    Mostly clear, with a low around 57.

  7. Wednesday86° · S 6 mph

    Mostly sunny, with a high near 86.

  8. Wednesday Night65° · S 2–7 mph

    Partly cloudy, with a low around 65.

  9. Thursday88° · 8% · SW 7–12 mph

    Mostly sunny, with a high near 88.

  10. Thursday Night66° · 34% · SW 5–8 mph

    A chance of rain showers after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

  11. Friday75° · 51% · NW 8 mph

    A chance of rain showers. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.

  12. Friday Night56° · 47% · N 8 mph

    A chance of rain showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.

  13. Saturday69° · 39% · NE 8 mph

    A chance of rain showers. Partly sunny, with a high near 69. Chance of precipitation is 40%.

  14. Saturday Night56° · 39% · NE 8 mph

    A chance of rain showers. Mostly cloudy, with a low around 56.

The forecaster’s discussion

NWS Wilmington, OH · issued Sep 27, 7:37 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.

What Has Changed

No significant changes.

KEY Messages

1) A stretch of dry weather and seasonable temperatures will continue into early next week. Warmer temperatures and rain chances will arrive later in the work week.

Discussion

KEY MESSAGE 1) River valley fog will burn off shortly after daybreak this morning. We may continue to observe some cirrus clouds in our CWA as they pivot around the upper low off the Atlantic Coast. The Ohio Valley remains in the dry slot of this low, which continues to sit and spin before it gets carried off to the northeast early in the work week.

Return flow develops after the low is carried off, which will result in a warming trend as we progress through the work week. Temperatures will likely be back above seasonal normals by Wednesday.

Rain chances look to return on Thursday as a boundary lays out across the Midwest region. Rain chances will persist through next weekend.

Aviation · 12Z Sunday Through Thursday

Continued to include vsby reductions at KLUK due to valley fog, which is expected to develop again tonight. Elsewhere, VFR conditions will prevail.

Surface winds will increase to around 10 kts by the late morning, with a subtle shift towards the NNW. Some cirrus clouds may move across the terminals, but otherwise skies will remain mostly clear.

OUTLOOK...No significant weather is expected.

ILN Watches / Warnings / Advisories

OH...None. KY...None. IN...None.

Hazardous weather outlook Sep 27, 1:52 AM EDT

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

FLUS41 KILN 270552
HWOILN

Hazardous Weather Outlook
National Weather Service Wilmington OH
152 AM EDT Sun Sep 27 2026

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-280600-
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-Bracken-
Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-
Delaware-Miami-Champaign-Clark-Madison-Licking-Preble-Montgomery-
Greene-Pickaway-Fairfield-Butler-Warren-Clinton-Ross-Hocking-
Hamilton-Clermont-Brown-Highland-Adams-Pike-Scioto-
152 AM EDT Sun Sep 27 2026

This Hazardous Weather Outlook is for east central Indiana, 
southeast Indiana, northeast Kentucky, northern Kentucky, central 
Ohio, south central Ohio, southwest Ohio and west central Ohio.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected 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.

Severe weather

  1. Day 1 · Sun Sep 27No risk area
  2. Day 2 · Mon Sep 28No risk area
  3. Day 3 · Tue Sep 29No risk area
  4. Day 4 · Wed Sep 30No risk area
  5. Day 5 · Thu Oct 1No risk area
  6. Day 6 · Fri Oct 2No risk area
  7. Day 7 · Sat Oct 3No risk area
  8. Day 8 · Sun Oct 4No risk area

Rainfall

  1. Day 1 · Sun Sep 27Under 0.01 in
  2. Day 2 · Mon Sep 28Under 0.01 in
  3. Day 3 · Tue Sep 29Under 0.01 in
  4. Day 4-5 · Sep 30–Oct 10.50 in
  5. Day 6-7 · Oct 2–Oct 31.00 in

The rainfall forecast on the map, days 1 to 7

Six to fourteen days

  1. Days 6–10 · Temperature33% chance above normalOct 2–Oct 6
  2. Days 6–10 · Precipitation40% chance above normalOct 2–Oct 6
  3. Days 8–14 · TemperatureNear normal most likelyOct 4–Oct 10
  4. Days 8–14 · PrecipitationNear normal most likelyOct 4–Oct 10

Frost and climate

NOAA 1991-2020 normals, Williamstown

The last spring freeze (32°F) usually comes around April 11 and the first fall freeze around October 29: a growing season of about 199 days.

One fall in ten brings a freeze by October 14; one spring in ten still has one after April 30.

Climate of 38.53, -84.81: 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.

ElementSunMonTueWedThuFriSatSun
HeatRisk max0 · Little0 · Little0 · Little1 · Minor1 · Minor1 · Minor1 · Minor0 · Little
Wet bulb globe temperature max67°71°74°76°80°72°66°69°
Heat index max71°75°80°84°89°74°
Wind chill min46°
Chance of thunder max0%0%0%1%8%13%13%10%
Visibility min9 mi10 mi
Mixing height max4,500 ft5,100 ft5,100 ft5,900 ft7,300 ft4,400 ft1,600 ft1,800 ft
Transport wind max12 mph9 mph8 mph12 mph14 mph10 mph10 mph9 mph
Twenty-foot wind max5 mph3 mph3 mph6 mph9 mph6 mph6 mph6 mph

Against the record

NOAA GHCN · Capital City Airport/Frankfort (FFT) · 24 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
Sun Sep 2771° / 47°77° / 55°94° (2019)40° (2000)
Mon Sep 2875° / 53°76° / 53°95° (2019)38° (2001)
Tue Sep 2979° / 57°74° / 49°96° (2019)39° (2000)
Wed Sep 3086° / 65°74° / 49°97° (2019)38° (2003)
Thu Oct 188° / 66°73° / 49°97° (2019)38° (2003)
Fri Oct 275° / 56°75° / 50°96° (2019)33° (2003)
Sat Oct 369° / 56°75° / 51°95° (2019)30° (2003)
Sun Oct 469° / 56°76° / 52°89° (2007)37° (2014)

Sun and moon

DayCivil twilightSunriseSunsetCivil twilightDaylightMoon
Sun7:05 AM7:32 AM7:28 PM7:55 PM11 h 56 min Waning gibbous · 99% lit
Mon7:06 AM7:32 AM7:27 PM7:53 PM11 h 55 min Waning gibbous · 95% lit
Tue7:07 AM7:33 AM7:25 PM7:51 PM11 h 52 min Waning gibbous · 90% lit
Wed7:08 AM7:34 AM7:23 PM7:50 PM11 h 49 min Waning gibbous · 83% lit
Thu7:09 AM7:35 AM7:22 PM7:48 PM11 h 47 min Waning gibbous · 74% lit
Fri7:10 AM7:36 AM7:20 PM7:47 PM11 h 44 min Waning gibbous · 64% lit
Sat7:11 AM7:37 AM7:19 PM7:45 PM11 h 42 min Last quarter · 54% lit
Sun7:11 AM7:38 AM7:17 PM7:44 PM11 h 39 min Last quarter · 43% 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