Current weather · Oct 5, 4:11 AM MST

32.4410, -110.7880

50°

Mostly ClearFeels like 43° · Humidity 63%NWS forecast for this hour; no recent station reportForecast by NWS NWS Tucson Arizona · grid 99,58
High
62°
Low
51°
Rain today
5%
Sunrise
6:20 AM
Sunset
6:02 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
Mon 4 AM50°43°38°63%1%ESE28 mph33 mph8%——
Mon 5 AM50°43°40°66%2%ESE28 mph33 mph7%1%——
Mon 6 AM50°43°39°65%2%ESE26 mph35 mph10%1%——
Mon 7 AM50°43°39°65%2%ESE26 mph33 mph8%1%——
Mon 8 AM52°52°41°65%2%ESE24 mph31 mph4%1%——
Mon 9 AM54°54°41°61%2%ESE23 mph31 mph2%1%——
Mon 10 AM56°56°42°59%2%ESE20 mph28 mph4%1%——
Mon 11 AM57°57°42°57%1%ESE16 mph22 mph6%1%——
Mon 12 PM60°60°45°57%1%ESE13 mph20 mph6%1%——
Mon 1 PM60°60°44°55%1%ESE10 mph16 mph8%1%——
Mon 2 PM61°61°44°53%5%ESE8 mph13 mph12%5%——
Mon 3 PM61°61°43°51%5%E8 mph13 mph14%5%——
Mon 4 PM60°60°43°52%5%E8 mph13 mph13%5%——
Mon 5 PM60°60°43°53%2%ESE8 mph12 mph9%2%——
Mon 6 PM59°59°45°59%2%E8 mph13 mph8%2%——
Mon 7 PM57°57°44°62%2%E10 mph15 mph6%2%——
Mon 8 PM56°56°43°62%1%ESE13 mph18 mph4%1%——
Mon 9 PM56°56°42°61%1%ESE15 mph20 mph5%1%——
Mon 10 PM55°55°42°63%1%ESE16 mph21 mph5%1%——
Mon 11 PM54°54°42°63%1%E17 mph21 mph4%1%——
Tue 12 AM54°55°42°63%1%ESE18 mph22 mph7%1%——
Tue 1 AM53°53°41°63%1%ESE20 mph23 mph6%1%——
Tue 2 AM52°52°41°66%1%ESE18 mph22 mph9%1%——
Tue 3 AM51°51°40°65%1%ESE18 mph23 mph7%1%——
Tue 4 AM51°51°40°66%1%ESE20 mph23 mph9%1%——
Tue 5 AM51°51°41°67%0%ESE18 mph23 mph9%——
Tue 6 AM52°52°40°64%0%ESE18 mph23 mph10%——
Tue 7 AM52°52°40°63%0%E17 mph21 mph11%——
Tue 8 AM54°54°41°61%0%E15 mph20 mph8%——
Tue 9 AM56°56°41°57%0%E10 mph16 mph4%——
Tue 10 AM58°58°41°54%0%E6 mph12 mph6%——
Tue 11 AM59°59°42°52%0%E5 mph8 mph10%——
Tue 12 PM62°62°44°51%0%E3 mph7 mph17%——
Tue 1 PM62°62°42°48%0%E2 mph7 mph18%——
Tue 2 PM62°62°41°46%0%NE2 mph7 mph17%——
Tue 3 PM63°63°40°43%0%N3 mph7 mph20%——
Tue 4 PM62°62°40°43%0%NNW5 mph8 mph23%——
Tue 5 PM62°62°40°46%0%NNW5 mph7 mph21%——
Tue 6 PM60°61°43°52%0%NNE3 mph7 mph29%——
Tue 7 PM59°59°42°54%0%NE5 mph7 mph18%——
Tue 8 PM57°57°41°54%0%ENE6 mph8 mph6%——
Tue 9 PM56°56°40°54%0%ENE7 mph9 mph5%——
Tue 10 PM56°56°39°54%0%E7 mph9 mph4%——
Tue 11 PM55°55°38°53%0%E7 mph10 mph3%——
Wed 12 AM55°55°38°53%0%E7 mph10 mph5%——
Wed 1 AM55°55°38°54%0%E8 mph12 mph6%——
Wed 2 AM54°54°38°54%0%E8 mph12 mph8%——
Wed 3 AM54°54°38°56%0%E9 mph12 mph8%——

The next 16 days

NWS grid published Oct 5, 1:18 AM MST to day 8, the National Blend of Models to day 10, the mean of GFS, ECMWF, ECMWF AI to day 16
  1. TodayOct 562°51°Sunny5%wind 28 mph · gusts 35 mph
  2. TueOct 663°53°Sunny1%wind 20 mph
  3. WedOct 765°53°Sunny0%wind 10 mph
  4. ThuOct 863°51°Sunny1%wind 17 mph · gusts 25 mph
  5. FriOct 962°50°Sunny1%wind 21 mph · gusts 31 mph
  6. SatOct 1061°51°Sunny12%wind 21 mph · gusts 30 mph
  7. SunOct 1158°48°Slight Chance Showers And Thunderstorms28%0.01 inwind 13 mph · gusts 20 mph
  8. MonOct 1256°45°25%0.06 inwind 15 mph · gusts 21 mph
  9. TueOct 1353°43°National Blend15%0.03 inwind 10 mph
  10. WedOct 1454°44°National Blend7%wind 7 mph
  11. ThuOct 15~68°55°Model mean
  12. FriOct 16~70°55°Model mean0.01 in
  13. SatOct 17~70°56°Model mean
  14. SunOct 18~71°56°Model mean
  15. MonOct 19~72°59°Model mean
  16. TueOct 20~74°62°Model mean0.11 in

Right now

NWS grid for this hour · UV from the EPA · air quality from AirNow
  • Feels like43°
  • WindESE 28 mphgusts 33 mph
  • Radar over this pointno reading
  • Humidity63%
  • Dew point38°
  • Pressure—
  • UV index—
  • Air quality—
  • Visibility—
  • Sunrise and sunsetSunrise · Sunset · not yet up
  • Moonrise1:04 AMMoonset 3:17 PM
  • Moon phaseWaning crescent31% lit

The National Blend of Models

NOAA NBM v5.0 · run of Oct 4, 11:00 PM MST

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 561°51°NWS grid 62° / 51°rain 4%wind 28 mph · gusts 35 mph
  2. TueOct 663°53°NWS grid 63° / 53°rain 1%wind 20 mph
  3. WedOct 764°53°NWS grid 65° / 53°rain 1%thunder 10%wind 10 mph
  4. ThuOct 863°51°NWS grid 63° / 51°rain 1%wind 20 mph · gusts 25 mph
  5. FriOct 961°50°NWS grid 62° / 50°rain 1%wind 25 mph · gusts 31 mph
  6. SatOct 1061°51°NWS grid 61° / 51°rain 16%thunder 10%wind 25 mph
  7. SunOct 1158°48°NWS grid 58° / 48°rain 28%thunder 18%0.03 inwind 14 mph · gusts 20 mph
  8. MonOct 1255°45°NWS grid 56° / 45°rain 28%thunder 17%0.08 inwind 15 mph
  9. TueOct 1353°43°Beyond the NWS gridrain 15%0.03 inwind 10 mph
  10. WedOct 1454°44°Beyond the NWS gridrain 7%wind 7 mph
  11. ThuOct 1555°—Beyond the NWS gridrain 3%0.01 inwind 8 mph
41°55°68°TueWedThuFriSatSunMon

BlendNWS gridChance of rain, hourly

The models, side by side

HRRR Oct 4, 11:00 PM MST · GFS Oct 4, 5:00 PM MST · GEFS Oct 4, 5:00 PM MST · ECMWF Oct 4, 5:00 PM MST · ECMWF AI Oct 4, 5:00 PM MST

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°TueWedThuFriSatSunMon

DayNWS gridHRRRGFSGEFSECMWFECMWF AI
Today Oct 562° 51°63° 46°78° 62°82° 65°74° 59°~77° 60°
Tue Oct 663° 53°65° 47°81° 65°84° 67°77° 60°~79° 61°
Wed Oct 765° 53°—84° 67°87° 70°~79° 65°~79° 63°
Thu Oct 863° 51°—83° 68°87° 71°79° 65°~79° 61°
Fri Oct 962° 50°—81° 67°85° 69°78° 62°~77° 60°
Sat Oct 1061° 51°—81° 65°82° 66°79° 64°0.15 in~76° 62°0.03 in
Sun Oct 1158° 48°0.01 in—81° 67°82° 65°0.01 in~70° 58°0.65 in~72° 62°0.06 in
Mon Oct 1256° 45°0.06 in—79° 64°81° 65°0.05 in~61° 55°0.76 in~67° 58°0.45 in
Tue Oct 13——74° 61°0.17 in80° 65°0.14 in~62° 51°0.01 in~61° 56°1.05 in
Wed Oct 14——74° 60°0.06 in80° 63°~65° 50°~61° 52°0.41 in
Thu Oct 15——~75° 62°0.03 in—~67° 54°~62° 48°
Fri Oct 16——~73° 63°0.04 in—~69° 54°~68° 49°
Sat Oct 17——~76° 61°—~68° 54°~67° 52°
Sun Oct 18——~75° 63°—~68° 54°~69° 51°
Mon Oct 19——~75° 66°—~72° 58°~70° 54°
Tue Oct 20——~74° 62°0.11 in———

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 San Manuel (E77) · 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 Tue Oct 20, 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%50%50%warmer 33%33% chance above normal · Oct to Dec20°40°60°80°100°TodayNov 1Dec 1Jan 1

Forecast high and lowNormal high and lowRecord high and lowCPC leans warmer than normal

Week ofNormalWarmest on recordColdest on recordTemperature leanPrecipitation lean
Oct 5—96° (2024)35° (1961)33% chance above normal · Oct 202633% chance above normal · Oct 2026
Oct 12—95° (2024)39° (2021)50% chance above normal · days 8 to 1440% chance above normal · days 8 to 14
Oct 19—93° (1959)34° (1971)33% chance above normal · Oct 202633% chance above normal · Oct 2026
Oct 26—90° (1959)25° (1971)33% chance above normal · Oct 202633% chance above normal · Oct 2026
Nov 2—86° (2020)30° (1956)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Nov 9—86° (1973)27° (1961)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Nov 16—85° (2020)16° (1958)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Nov 23—84° (2017)20° (1976)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Nov 30—81° (1973)21° (1960)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Dec 7—77° (1970)18° (1960)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Dec 14—74° (1977)21° (1964)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Dec 21—74° (1955)15° (1968)33% chance above normal · Oct to Dec40% chance above normal · Oct to Dec
Dec 28—73° (2012)19° (1966)33% chance above normal · Oct to Dec40% chance above normal · 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 hLowsteady conditions
  • 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

  • RunningtodayVery goodwind
  • HikingtodayIdealfine conditions
  • BikingtodayGoodwind
  • GolftodayGoodwind
  • FishingtodayGoodwind
  • Boating and paddlingtodayPoorwind
  • Beach and pooltodayFaircool
  • CampingtonightVery goodwind
  • StargazingtonightIdealdark, clear sky

Travel

  • Air travelnext 24 hVery goodwind
  • Drivingnext 24 hIdealclear roads

Home and garden

  • Lawn mowingtodayIdealfine conditions
  • GardeningtodayVery goodwind
  • Outdoor entertainingtodayGoodwind
  • Drying laundry outsidetodayIdealfine conditions
  • Painting and outdoor projectstodayVery goodwind
  • FrosttonightLowmild

Pests

  • MosquitoestodayModeratewarm
  • TickstodayHighwarm
  • Indoor pestsnext 24 hLowmild
  • Outdoor peststodayLowcool

Stargazing

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

Tonight: 7 dark, clear hours without a bright moon, from 7:00 PM. Rated excellent.

Night ofRatingDarkClear hoursClear and moonlessMoon litTransparency (est.)DewStrongest wind
MondayExcellent7:24 PM to 4:59 AM10 of 107 h from 7:00 PM28%Good20 mph
TuesdayExcellent7:23 PM to 5:00 AM10 of 1010 h from 7:00 PM19%Good10 mph
WednesdayExcellent7:21 PM to 5:01 AM10 of 1010 h from 7:00 PM12%Good16 mph
ThursdayExcellent7:20 PM to 5:01 AM10 of 1010 h from 7:00 PM6%Good21 mph
FridayExcellent7:19 PM to 5:02 AM10 of 1010 h from 7:00 PM2%Good21 mph
SaturdayPoor7:18 PM to 5:03 AM0 of 10None0%12 mph
SundayPoor7:16 PM to 5:03 AM0 of 10None1%12 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
Mon5:55 AM to 6:05 AM6:05 AM to 6:53 AM5:30 PM to 6:18 PM6:18 PM to 6:27 PM
Tue5:56 AM to 6:06 AM6:06 AM to 6:53 AM5:29 PM to 6:16 PM6:16 PM to 6:26 PM
Wed5:57 AM to 6:06 AM6:06 AM to 6:54 AM5:27 PM to 6:15 PM6:15 PM to 6:24 PM
Thu5:57 AM to 6:07 AM6:07 AM to 6:55 AM5:26 PM to 6:14 PM6:14 PM to 6:23 PM
Fri5:58 AM to 6:08 AM6:08 AM to 6:56 AM5:25 PM to 6:13 PM6:13 PM to 6:22 PM
Sat5:59 AM to 6:08 AM6:08 AM to 6:56 AM5:23 PM to 6:11 PM6:11 PM to 6:21 PM
Sun6:00 AM to 6:09 AM6:09 AM to 6:57 AM5:22 PM to 6:10 PM6:10 PM to 6:20 PM
NESWSRSSMRMS
  • SR Sunrise 6:20 AM, 95° E
  • SS Sunset 6:02 PM, 264° W
  • MR Moonrise 1:04 AM, 65° ENE
  • MS Moonset 3:17 PM, 291° WNW
  • Waning crescent, 31% 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 (ground wind near or over your limit, wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)). Next good stretch: Mon 2 PM to 6 PM, 4 hours.

Today: civil twilight for Part 107 5:50 AM to sunrise 6:20 AM, and sunset 6:02 PM to 6:32 PM. Anti-collision lighting is required in those minutes and at night.

Mon6 AM12 PM6 PM
Tue12 AM6 AM12 PM6 PM
Wed12 AM6 AM12 PM6 PM

Good Caution No-fly

HourVerdictWind (mph)400 ft est. (mph)Gust (mph)RainVisibilityCloud allowsTempKpWhy
Mon 4 AMNo-fly2840461%50°ground wind near or over your limit, wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Mon 5 AMNo-fly2840462%50°ground wind near or over your limit, wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Mon 6 AMNo-fly2639472%50°ground wind near or over your limit, wind at 400 ft near or over your limit, gusts near or over your limit, civil twilight: lighting required (107.29)
Mon 7 AMNo-fly2639452%50°ground wind near or over your limit, wind at 400 ft near or over your limit, gusts near or over your limit
Mon 8 AMNo-fly2435422%52°ground wind near or over your limit, wind at 400 ft near or over your limit, gusts near or over your limit
Mon 9 AMNo-fly2333422%54°wind at 400 ft near or over your limit, gusts near or over your limit, ground wind near or over your limit
Mon 10 AMNo-fly2028372%56°wind at 400 ft near or over your limit, gusts near or over your limit, ground wind near or over your limit
Mon 11 AMNo-fly1623291%57°gusts near or over your limit, wind at 400 ft near or over your limit
Mon 12 PMCaution1316231%60°gusts near or over your limit
Mon 1 PMCaution1012181%60°gusts near or over your limit
Mon 2 PMGood810145%61°nothing against it
Mon 3 PMGood810155%61°nothing against it
Mon 4 PMGood810155%60°nothing against it
Mon 5 PMGood810142%60°nothing against it
Mon 6 PMCaution819242%59°wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Mon 7 PMNo-fly1025292%57°wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Mon 8 PMNo-fly1318241%56°gusts near or over your limit, wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Mon 9 PMNo-fly1522261%56°gusts near or over your limit, wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Mon 10 PMNo-fly1623281%55°gusts near or over your limit, wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Mon 11 PMNo-fly1725291%54°wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Tue 12 AMNo-fly1827301%54°wind at 400 ft near or over your limit, gusts near or over your limit, ground wind near or over your limit, night: lighting and night training required (107.29)
Tue 1 AMNo-fly2028321%53°wind at 400 ft near or over your limit, gusts near or over your limit, ground wind near or over your limit, night: lighting and night training required (107.29)
Tue 2 AMNo-fly1827301%52°wind at 400 ft near or over your limit, gusts near or over your limit, ground wind near or over your limit, night: lighting and night training required (107.29)
Tue 3 AMNo-fly1827311%51°wind at 400 ft near or over your limit, gusts near or over your limit, ground wind 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

  • Mon 2 PM to 7 PM 5 hours, every hour within the rules
  • Tue 10 AM to 1 PM 3 hours, every hour within the rules
  • Tue 3 PM to Wed 4 AM 13 hours, every hour within the rules
  • Wed 7 AM to 11 AM 4 hours, every hour within the rules
  • Wed 2 PM to 11 PM 9 hours, every hour within the rules
  • Thu 11 AM to 7 PM 8 hours, every hour within the rules
  • Fri 3 PM to 7 PM 4 hours, every hour within the rules
  • Sat 1 PM to Sun 1 AM 12 hours, every hour within the rules
Mon6 AM12 PM6 PM
Tue12 AM6 AM12 PM6 PM
Wed12 AM6 AM12 PM6 PM
Thu12 AM6 AM12 PM6 PM

Good Marginal No

Field days

DayDaytimeChance of rainRainLowest humidityStrongest windDry days in a rowHay drying
MondayDry5%0.00 in51%24 mph7 d
TuesdayDry0%0.00 in43%15 mph6 dGood
WednesdayDry0%0.00 in37%8 mph5 dGood
ThursdayDry1%0.00 in38%15 mph4 dGood
FridayDry1%0.00 in39%20 mph3 dGood
SaturdayDry8%0.00 in41%17 mph2 dGood
SundayDry28%0.01 in51%13 mph1 d
MondayShowers possible25%0.06 in59%15 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 Friday, rated best.

DayRatingMajor periodsMinor periodsMoonSunrise, sunset
Mon Fair7:15 AM to 9:15 AM7:41 PM to 9:41 PM12:34 AM to 1:34 AM2:47 PM to 3:47 PM 31%6:20 AM, 6:02 PM
Tue Poor8:07 AM to 10:07 AM8:31 PM to 10:31 PM1:42 AM to 2:42 AM3:22 PM to 4:22 PM 22%6:21 AM, 6:01 PM
Wed Fair8:55 AM to 10:55 AM9:18 PM to 11:18 PM2:48 AM to 3:48 AM3:52 PM to 4:52 PM 14%6:21 AM, 6:00 PM
Thu Good9:41 AM to 11:41 AM10:03 PM to 12:03 AM3:52 AM to 4:52 AM4:21 PM to 5:21 PM 7%6:22 AM, 5:59 PM
Fri Best10:26 AM to 12:26 PM10:48 PM to 12:48 AM4:54 AM to 5:54 AM4:49 PM to 5:49 PM 3%6:23 AM, 5:57 PM
Sat Best11:10 AM to 1:10 PM5:56 AM to 6:56 AM5:18 PM to 6:18 PM 0%6:23 AM, 5:56 PM
Sun Best11:33 PM to 1:33 AM11:56 AM to 1:56 PM6:57 AM to 7:57 AM5:49 PM to 6:49 PM 0%6:24 AM, 5:55 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. Overnight50° · 2% · ESE 28 mph

    Mostly clear, with a low around 50. East southeast wind around 28 mph.

  2. Monday62° · 5% · ESE 8–26 mph

    Sunny, with a high near 62. East southeast wind 8 to 26 mph.

  3. Monday Night51° · 2% · ESE 8–20 mph

    Mostly clear, with a low around 51. East southeast wind 8 to 20 mph.

  4. Tuesday63° · ENE 2–18 mph

    Sunny, with a high near 63. East northeast wind 2 to 18 mph.

  5. Tuesday Night53° · ENE 3–10 mph

    Mostly clear, with a low around 53. East northeast wind 3 to 10 mph.

  6. Wednesday65° · ENE 2–10 mph

    Sunny, with a high near 65.

  7. Wednesday Night53° · ENE 7–16 mph

    Mostly clear, with a low around 53.

  8. Thursday63° · 1% · E 6–16 mph

    Sunny, with a high near 63.

  9. Thursday Night51° · E 9–21 mph

    Clear, with a low around 51.

  10. Friday62° · 1% · E 8–20 mph

    Sunny, with a high near 62.

  11. Friday Night50° · 1% · E 9–21 mph

    Mostly clear, with a low around 50.

  12. Saturday61° · 8% · SE 6–20 mph

    Sunny, with a high near 61.

  13. Saturday Night51° · 14% · SE 6–12 mph

    A slight chance of rain showers after 5am. Partly cloudy, with a low around 51.

  14. Sunday58° · 28% · S 8–13 mph

    A slight chance of rain showers before 11am, then a slight chance of showers and thunderstorms between 11am and 5pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 58.

The forecaster’s discussion

NWS NWS Tucson Arizona · issued Oct 5, 2:37 AM MST

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.

Synopsis

Breezy east winds continue today across much of southeastern Arizona. Winds pick up again out of the east Thursday into the weekend. Temperatures will be around normal to a few degrees above normal through the work week. Slight chances for precipitation in western Pima County today and in the White Mountains on Wednesday.

Discussion

Broad high pressure currently sits over the Southwest with Hurricane Rachel well to the south about 600 miles southwest of Cabo. Even with Rachel being so far away tropical moisture is still making its way into northern Mexico. PWATs in Sonora are around 1.5" and this moisture is expected to slowly move northward today. However not expecting much in the way of storms, mainly buildups along the higher terrain. Hi-res guidance does show a weak gulf surge that may make it to the Organ Pipe National Monument area. This could lead to an isolated storm or two in western Pima County. Otherwise the easterly pressure gradient is still in place today, although weaker than it was over the weekend. Expect breezy east winds this morning into the early afternoon with speeds 12-18 mph and gusts 25-35 mph.

High pressure hangs around for most of the work week keeping temperatures around normal to a few degrees above normal. Deterministic models show a weak shortwave moving through Arizona Wednesday which may kick off isolated storms over the White Mountains during the afternoon. NBM PoPs are currently 15-30 percent. Starting Thursday another easterly surface pressure gradient begins to set up leading to breezy east winds Thursday into Saturday.

This weekend into early next week the forecast becomes more uncertain as a trough forms along the West Coast. Most ensemble members show a trough during this time period, but there is fairly large spread in the depth and strength of the trough. This has implications for Rachel, which will be well off the west coast of Baja by this weekend. A trough that extends further south could bring Sarah back towards Baja, which is what the Euro is showing. After Friday there is lots of uncertainty in Sarah's track. For now the forecast is trending wetter with 20-40 PoPs starting Sunday into Monday as the trough moves through. Temperatures also drop to around normal or a few degrees below normal and winds will likely be breezy out of the southwest.

Aviation

Valid through 06/12Z. SCT clouds 7k-10k ft AGL with some BKN cigs over the international border this afternoon and evening. Mid level cloud cover will be increasing after 05/21Z and staying south of KTUS. Sfc winds will be E/SE 12-18 kts with gusts 25-30 kts through 05/20Z, then decrease to 7-12 kts for the remainder of the period. Aviation discussion not updated for TAF amendments.

Fire Weather

Breezy easterly winds continue this morning and early afternoon across much of Southeast Arizona. Minimum relative humidity values will remain 15-30 percent in lower elevations and above 40 percent in high elevation terrain through the work week. There is a very slight chance for storms over western Pima County this afternoon and chance for storms over the White Mountains Wednesday afternoon. Lighter winds expected on Tuesday and Wednesday, then easterly winds return Thursday into Saturday.

TWC Watches / Warnings / Advisories

None.

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 · Mon Oct 5No risk area
  2. Day 2 · Tue Oct 6No risk area
  3. Day 3 · Wed Oct 7General Thunderstorms Risk
  4. Day 4 · Thu Oct 8No risk area
  5. Day 5 · Fri Oct 9No risk area
  6. Day 6 · Sat Oct 10No risk area
  7. Day 7 · Sun Oct 11No risk area
  8. Day 8 · Mon Oct 12No risk area

Tornado chance

  1. Today, within 25 milesUnder 2%

Our own model, not an official forecast.

Tornado risk and storm threats on the radar

Rainfall

  1. Day 1 · Mon Oct 5Under 0.01 in
  2. Day 2 · Tue Oct 6Under 0.01 in
  3. Day 3 · Wed Oct 7Under 0.01 in
  4. Day 4-5 · Oct 8–Oct 9Under 0.01 in
  5. Day 6-7 · Oct 10–Oct 110.01 in

The rainfall forecast on the map, days 1 to 7

Six to fourteen days

  1. Days 6–10 · Temperature50% chance above normalOct 10–Oct 14
  2. Days 6–10 · Precipitation40% chance above normalOct 10–Oct 14
  3. Days 8–14 · Temperature50% chance above normalOct 12–Oct 18
  4. Days 8–14 · Precipitation40% chance above normalOct 12–Oct 18

Drought

  1. Drought Monitor, map of Sep 29D0 Abnormally dry

Drought in this county: the map, the record since 2000 and the outlook

Frost and climate

NOAA 1991-2020 normals, Catalina SP

The last spring freeze (32°F) usually comes around April 2 and the first fall freeze around November 11: a growing season of about 222 days.

One fall in ten brings a freeze by October 26; one spring in ten still has one after April 18.

Climate of 32.44, -110.79: 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.

ElementMonTueWedThuFriSatSunMon
Wet bulb globe temperature max57°59°59°57°55°55°54°52°
Wind chill min43°44°44°
Chance of thunder max5%1%0%1%1%8%17%16%
Snow level min11,500 ft11,500 ft12,200 ft12,000 ft11,500 ft11,700 ft12,100 ft11,800 ft
Mixing height max5,200 ft6,000 ft9,300 ft9,300 ft8,100 ft6,800 ft7,100 ft5,500 ft
Transport wind max28 mph20 mph10 mph20 mph25 mph25 mph14 mph15 mph
Twenty-foot wind max22 mph16 mph8 mph14 mph16 mph16 mph10 mph12 mph

Against the record

NOAA GHCN · San Manuel (E77) · 16 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
Mon Oct 562° / 51°—96° (2024)45° (1959)
Tue Oct 663° / 53°—96° (2024)49° (1969)
Wed Oct 765° / 53°—95° (2024)48° (2011)
Thu Oct 863° / 51°—94° (2024)41° (1970)
Fri Oct 962° / 50°—94° (1965)38° (1961)
Sat Oct 1061° / 51°—93° (1965)35° (1961)
Sun Oct 1158° / 48°—95° (1965)39° (1961)
Mon Oct 1256° / 45°—95° (2024)41° (1969)

Sun and moon

DayCivil twilightSunriseSunsetCivil twilightDaylightMoon
Mon5:55 AM6:20 AM6:02 PM6:27 PM11 h 42 min Waning crescent · 31% lit
Tue5:56 AM6:21 AM6:01 PM6:26 PM11 h 40 min Waning crescent · 22% lit
Wed5:57 AM6:21 AM6:00 PM6:24 PM11 h 39 min Waning crescent · 14% lit
Thu5:57 AM6:22 AM5:59 PM6:23 PM11 h 37 min Waning crescent · 7% lit
Fri5:58 AM6:23 AM5:57 PM6:22 PM11 h 34 min Waning crescent · 3% lit
Sat5:59 AM6:23 AM5:56 PM6:21 PM11 h 33 min New moon · 0% lit
Sun6:00 AM6:24 AM5:55 PM6:20 PM11 h 31 min New moon · 0% lit
Mon6:00 AM6:25 AM5:54 PM6:18 PM11 h 29 min Waxing crescent · 2% 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