Current weather · Sep 30, 2:54 PM EDT

41.0720, -78.9390

71°

Mostly CloudyFeels like 71° · Humidity 61%NWS forecast for this hour; no recent station reportForecast by NWS Pittsburgh, PA · grid 111,99
High
71°
Low
53°
Rain today
12%
Sunrise
7:11 AM
Sunset
6:59 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
Wed 2 PM71°71°57°61%0%WSW7 mph7 mph73%0.01 inHg10 mi12,500 ft
Wed 3 PM71°71°57°61%0%SW6 mph12 mph74%0.01 inHg10 mi15,100 ft
Wed 4 PM70°70°57°64%0%SW5 mph12 mph66%0.01 inHg10 mi22,000 ft
Wed 5 PM70°70°57°64%0%SW5 mph10 mph68%0.01 inHg10 mi23,600 ft
Wed 6 PM68°68°57°68%0%SW3 mph8 mph69%0.01 inHg10 mi23,300 ft
Wed 7 PM64°64°57°78%0%SW2 mph8 mph81%0.01 inHg10 mi23,300 ft
Wed 8 PM62°62°57°83%2%SSW2 mph7 mph85%0.01 inHg10 mi24,600 ft
Wed 9 PM61°61°57°85%3%S2 mph7 mph87%0.01 inHg10 mi22,400 ft
Wed 10 PM61°61°57°86%4%S2 mph7 mph87%0.01 inHg10 mi19,300 ft
Wed 11 PM61°61°57°86%12%S2 mph8 mph88%2%0.01 inHg10 mi13,500 ft
Thu 12 AM61°61°57°87%11%SSW2 mph7 mph88%2%0.01 inHg10 mi11,000 ft
Thu 1 AM61°61°57°87%12%S2 mph7 mph91%2%0.01 inHg9 mi12,000 ft
Thu 2 AM61°61°57°87%13%S2 mph8 mph91%1%0.01 inHg10 mi9,000 ft
Thu 3 AMIsolated light rain showers60°60°57°89%16%S2 mph8 mph84%1%0.01 inHg10 mi9,000 ft
Thu 4 AMIsolated light rain showers60°60°57°88%18%S2 mph9 mph79%1%0.01 inHg10 mi8,500 ft
Thu 5 AMIsolated light rain showers60°60°57°88%17%SSW3 mph9 mph76%0.01 inHg10 mi7,300 ft
Thu 6 AMIsolated light rain showers60°60°56°88%23%0.01 inSSW3 mph10 mph72%0.01 inHg10 mi7,300 ft
Thu 7 AMIsolated light rain showers60°60°56°87%21%SSW3 mph10 mph80%0.01 inHg10 mi7,300 ft
Thu 8 AMIsolated light rain showers60°60°56°88%16%S5 mph12 mph73%0.01 inHg10 mi7,400 ft
Thu 9 AM62°62°58°87%11%SSW6 mph14 mph71%0.01 inHg10 mi9,000 ft
Thu 10 AM64°65°59°81%8%SW7 mph15 mph48%0.01 inHg10 mi
Thu 11 AM67°67°59°76%4%SW7 mph16 mph30%0.01 inHg10 mi
Thu 12 PM70°70°60°70%3%SW8 mph16 mph38%0.01 inHg10 mi
Thu 1 PM73°73°60°62%3%SW8 mph17 mph44%0.01 inHg10 mi
Thu 2 PM75°75°60°59%3%SW9 mph18 mph35%0.01 inHg10 mi
Thu 3 PM76°76°60°58%3%SW9 mph18 mph51%0.01 inHg10 mi
Thu 4 PM77°77°60°56%2%SW8 mph18 mph36%0.01 inHg10 mi
Thu 5 PM76°77°61°59%3%SW8 mph17 mph42%0.01 inHg10 mi
Thu 6 PM75°75°60°60%3%SSW7 mph16 mph46%0.01 inHg10 mi
Thu 7 PM73°73°60°64%3%SSW7 mph16 mph41%0.01 inHg10 mi
Thu 8 PM69°69°60°72%0%SSW7 mph16 mph49%0.01 inHg10 mi
Thu 9 PM68°68°60°74%0%SSW6 mph16 mph72%0.01 inHg10 mi25,000 ft
Thu 10 PM67°67°60°76%0%SSW6 mph16 mph76%0.01 inHg10 mi25,000 ft
Thu 11 PM67°67°60°77%0%SSW6 mph16 mph77%0.01 inHg10 mi25,000 ft
Fri 12 AM67°67°60°78%0%SSW6 mph16 mph78%0.01 inHg10 mi8,000 ft
Fri 1 AM66°67°59°77%0%SW6 mph17 mph72%0.01 inHg10 mi8,000 ft
Fri 2 AM66°67°59°76%0%SW7 mph18 mph63%0.01 inHg10 mi5,800 ft
Fri 3 AM66°66°58°76%0%SW7 mph18 mph48%0.01 inHg10 mi5,800 ft
Fri 4 AM66°66°58°75%0%SW8 mph21 mph62%0.01 inHg10 mi5,800 ft
Fri 5 AM66°66°58°75%4%SW8 mph21 mph63%1%0.01 inHg10 mi5,100 ft
Fri 6 AM65°65°57°76%1%SW9 mph22 mph64%1%0.01 inHg10 mi5,100 ft
Fri 7 AMChance of light rain showers65°65°57°76%48%0.01 inSW9 mph22 mph65%1%0.01 inHg10 mi5,100 ft
Fri 8 AMLight rain showers65°65°58°78%94%0.02 inSW9 mph21 mph96%5%0.01 inHg10 mi5,500 ft
Fri 9 AMLight rain showers65°65°59°82%94%0.02 inWSW9 mph21 mph96%5%0.01 inHg10 mi5,500 ft
Fri 10 AMLight rain showers66°66°60°81%94%0.02 inWSW9 mph21 mph96%5%0.01 inHg10 mi5,500 ft
Fri 11 AMLight rain showers68°68°61°79%94%0.02 inWSW10 mph22 mph96%9%0.01 inHg10 mi6,000 ft
Fri 12 PMLight rain showers69°69°62°80%94%0.02 inWSW10 mph21 mph96%9%0.01 inHg10 mi6,000 ft
Fri 1 PMLight rain showers69°69°63°81%94%0.02 inW10 mph21 mph96%9%0.01 inHg10 mi6,000 ft

The next 16 days

NWS grid published Sep 30, 2:21 PM EDT to day 8, the National Blend of Models to day 11, the mean of GFS, ECMWF, ECMWF AI to day 16
  1. TodaySep 3071°53°Mostly Cloudy12%wind 7 mph
  2. ThuOct 178°64°Isolated Rain Showers then Partly Sunny23%0.01 inwind 9 mph · gusts 18 mph
  3. FriOct 272°42°Rain Showers94%0.31 inwind 10 mph · gusts 22 mph
  4. SatOct 366°44°Sunny3%wind 5 mph · gusts 13 mph
  5. SunOct 467°46°Mostly Sunny5%wind 7 mph · gusts 15 mph
  6. MonOct 562°36°Mostly Sunny5%wind 10 mph · gusts 20 mph
  7. TueOct 658°36°Areas Of Frost then Sunny0%wind 5 mph · gusts 12 mph
  8. WedOct 764°44°5%wind 7 mph · gusts 15 mph
  9. ThuOct 867°45°National Blend13%wind 7 mph · gusts 15 mph
  10. FriOct 966°43°National Blend17%wind 9 mph · gusts 17 mph
  11. SatOct 1064°42°National Blend13%0.02 inwind 8 mph · gusts 16 mph
  12. SunOct 11~70°52°Model mean0.07 in
  13. MonOct 12~63°48°Model mean0.55 in
  14. TueOct 13~59°44°Model mean0.02 in
  15. WedOct 14~53°38°Model mean0.03 in
  16. ThuOct 15~40°32°Model mean0.03 in

Right now

NWS grid for this hour · UV from the EPA · air quality from AirNow
  • Feels like71°
  • WindWSW 7 mph
  • Radar over this pointno reading
  • Humidity61%
  • Dew point57°
  • Pressure0.01 inHg
  • UV index—
  • Air quality—
  • Visibility10 mi
  • Sunrise and sunsetSunrise · Sunset
  • Moonrise9:02 PMMoonset 11:55 AM
  • Moon phaseWaning gibbous83% lit

The National Blend of Models

NOAA NBM v5.0 · run of Sep 30, 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 3074°59°NWS grid 71° / 53°rain 12%wind 6 mph · gusts 12 mph
  2. ThuOct 178°63°NWS grid 78° / 64°rain 26%wind 9 mph · gusts 18 mph
  3. FriOct 271°43°NWS grid 72° / 42°rain 90%thunder 10%0.16 inwind 10 mph · gusts 22 mph
  4. SatOct 368°45°NWS grid 66° / 44°rain 4%wind 5 mph · gusts 12 mph
  5. SunOct 468°45°NWS grid 67° / 46°rain 12%0.01 inwind 7 mph · gusts 15 mph
  6. MonOct 563°37°NWS grid 62° / 36°rain 1%wind 12 mph · gusts 21 mph
  7. TueOct 658°36°NWS grid 58° / 36°rain 0%wind 6 mph · gusts 12 mph
  8. WedOct 764°43°NWS grid 64° / 44°rain 3%wind 6 mph · gusts 13 mph
  9. ThuOct 867°45°Beyond the NWS gridrain 13%wind 7 mph · gusts 15 mph
  10. FriOct 966°43°Beyond the NWS gridrain 17%wind 9 mph · gusts 17 mph
  11. SatOct 1064°42°Beyond the NWS gridrain 13%0.02 inwind 8 mph · gusts 16 mph
32°55°77°ThuFriSatSunMonTueWed

BlendNWS gridChance of rain, hourly

The models, side by side

HRRR Sep 30, 8:00 AM EDT · GFS Sep 30, 8:00 AM EDT · GEFS Sep 30, 8:00 AM EDT · ECMWF Sep 29, 8:00 PM EDT · ECMWF AI Sep 30, 8:00 AM 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.

32°59°86°ThuFriSatSunMonTueWed

DayNWS gridHRRRGFSGEFSECMWFECMWF AI
Today Sep 3071° 53°70° 55°71° 54°71° 55°71° 55°~71° 54°0.01 in
Thu Oct 178° 64°0.01 in77° 60°75° 60°75° 60°73° 62°0.01 in~79° 62°0.02 in
Fri Oct 272° 42°0.31 in67° 63°66° 52°0.01 in65° 49°0.19 in70° 50°0.37 in~67° 55°0.21 in
Sat Oct 366° 44°—64° 44°62° 42°62° 44°~63° 45°
Sun Oct 467° 46°—68° 46°64° 46°0.05 in67° 46°~64° 47°
Mon Oct 562° 36°—59° 42°59° 40°0.01 in60° 46°~61° 49°
Tue Oct 658° 36°—54° 33°54° 34°~55° 41°~57° 35°
Wed Oct 764° 44°—62° 36°60° 35°~64° 39°0.03 in~60° 40°0.07 in
Thu Oct 8——62° 44°0.02 in62° 45°0.04 in~65° 53°0.04 in~65° 51°0.06 in
Fri Oct 9——62° 43°62° 44°0.05 in~61° 43°~65° 42°
Sat Oct 10——~70° 45°~44° 43°~63° 46°~73° 44°
Sun Oct 11——~68° 52°0.20 in—~67° 43°~75° 61°0.02 in
Mon Oct 12——~58° 45°1.09 in—~75° 53°~55° 46°0.54 in
Tue Oct 13——~57° 38°—~74° 54°~47° 40°0.04 in
Wed Oct 14——~52° 43°0.06 in—~51° 46°~53° 33°
Thu Oct 15——~40° 32°0.03 in——~34° 34°

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 Du Bois (Awos) (DUJ) · 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 Thu Oct 15, 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 lean40%33%33%warmer 40% · Oct 202640% chance above normal · Oct to Dec0°20°40°60°80°TodayOct 1Nov 1Dec 1

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

Week ofNormalWarmest on recordColdest on recordTemperature leanPrecipitation lean
Sep 3067° / 47°86° (2019)24° (1974)40% chance above normal · Oct 2026equal chances · Oct 2026
Oct 763° / 43°85° (2007)23° (1964)33% chance below normal · days 8 to 14near normal most likely · days 8 to 14
Oct 1456° / 39°80° (1962)17° (1972)40% chance above normal · Oct 2026equal chances · Oct 2026
Oct 2155° / 41°80° (2024)16° (1969)40% chance above normal · Oct 2026equal chances · Oct 2026
Oct 2853° / 37°77° (2024)16° (1965)40% chance above normal · Oct 2026equal chances · Oct 2026
Nov 450° / 34°79° (2024)10° (1991)40% chance above normal · Oct to Decequal chances · Oct to Dec
Nov 1147° / 33°68° (2012)8° (1986)40% chance above normal · Oct to Decequal chances · Oct to Dec
Nov 1845° / 30°71° (2016)7° (2014)40% chance above normal · Oct to Decequal chances · Oct to Dec
Nov 2542° / 30°73° (2005)2° (1976)40% chance above normal · Oct to Decequal chances · Oct to Dec
Dec 237° / 25°72° (1982)-6° (1976)40% chance above normal · Oct to Decequal chances · Oct to Dec
Dec 937° / 23°63° (2015)-8° (1988)40% chance above normal · Oct to Decequal chances · Oct to Dec
Dec 1633° / 19°65° (2013)-10° (1989)40% chance above normal · Oct to Decequal chances · Oct to Dec
Dec 2332° / 20°65° (1982)-14° (1983)40% 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 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

  • RunningtodayIdealfine conditions
  • HikingtodayIdealfine conditions
  • BikingtodayIdealfine conditions
  • GolftodayIdealfine conditions
  • FishingtodayIdealfine conditions
  • Boating and paddlingtodayIdealfine conditions
  • Beach and pooltodayGoodcool
  • CampingtonightIdealfine conditions
  • StargazingtonightPoorovercast

Travel

  • Air travelnext 24 hIdealclear skies
  • Drivingnext 24 hIdealclear roads

Home and garden

  • Lawn mowingtodayIdealfine conditions
  • GardeningtodayIdealfine conditions
  • Outdoor entertainingtodayIdealfine conditions
  • Drying laundry outsidetodayGoodlittle sun
  • 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 poor.

Night ofRatingDarkClear hoursClear and moonlessMoon litTransparency (est.)DewStrongest wind
WednesdayPoor8:31 PM to 5:41 AM0 of 9None80%3 h3 mph
ThursdayPoor8:29 PM to 5:42 AM0 of 10None70%8 mph
FridayFair8:27 PM to 5:43 AM2 of 10None60%Poor10 h7 mph
SaturdayGood8:26 PM to 5:44 AM6 of 104 h from 8:00 PM50%Fair2 h5 mph
SundayPoor8:24 PM to 5:45 AM0 of 10None39%7 h3 mph
MondayGood8:22 PM to 5:46 AM10 of 107 h from 8:00 PM29%Fair2 h7 mph
TuesdayGood8:21 PM to 5:47 AM10 of 1010 h from 8:00 PM20%Fair2 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
Wed6:44 AM to 6:55 AM6:55 AM to 7:48 AM6:23 PM to 7:16 PM7:16 PM to 7:27 PM
Thu6:45 AM to 6:56 AM6:56 AM to 7:49 AM6:21 PM to 7:14 PM7:14 PM to 7:25 PM
Fri6:46 AM to 6:57 AM6:57 AM to 7:50 AM6:19 PM to 7:13 PM7:13 PM to 7:23 PM
Sat6:47 AM to 6:58 AM6:58 AM to 7:51 AM6:18 PM to 7:11 PM7:11 PM to 7:22 PM
Sun6:48 AM to 6:59 AM6:59 AM to 7:52 AM6:16 PM to 7:09 PM7:09 PM to 7:20 PM
Mon6:49 AM to 7:00 AM7:00 AM to 7:53 AM6:14 PM to 7:08 PM7:08 PM to 7:18 PM
Tue6:50 AM to 7:01 AM7:01 AM to 7:54 AM6:13 PM to 7:06 PM7:06 PM to 7:17 PM
NESWSRSSMRMS
  • SR Sunrise 7:11 AM, 93° E
  • SS Sunset 6:59 PM, 267° W
  • MR Moonrise 9:02 PM, 54° NE
  • MS Moonset 11:55 AM, 304° NW
  • Waning gibbous, 83% 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: Wed 2 PM to 6 PM, 4 hours.

Today: civil twilight for Part 107 6:41 AM to sunrise 7:11 AM, and sunset 6:59 PM to 7:29 PM. Anti-collision lighting is required in those minutes and at night.

Wed6 PM
Thu12 AM6 AM12 PM6 PM
Fri12 AM6 AM12 PM6 PM

Good Caution No-fly

HourVerdictWind (mph)400 ft est. (mph)Gust (mph)RainVisibilityCloud allowsTempKpWhy
Wed 2 PMGood7990%10 mi400 ft71°nothing against it
Wed 3 PMGood67130%10 mi400 ft71°nothing against it
Wed 4 PMGood56130%10 mi400 ft70°nothing against it
Wed 5 PMGood56120%10 mi400 ft70°nothing against it
Wed 6 PMCaution3490%10 mi400 ft68°civil twilight: lighting required (107.29)
Wed 7 PMCaution2390%10 mi400 ft64°night: lighting and night training required (107.29)
Wed 8 PMCaution2382%10 mi400 ft62°night: lighting and night training required (107.29)
Wed 9 PMCaution2383%10 mi400 ft61°night: lighting and night training required (107.29)
Wed 10 PMCaution2384%10 mi400 ft61°night: lighting and night training required (107.29)
Wed 11 PMCaution23912%10 mi400 ft61°night: lighting and night training required (107.29)
Thu 12 AMCaution23811%10 mi400 ft61°night: lighting and night training required (107.29)
Thu 1 AMCaution23812%9 mi400 ft61°night: lighting and night training required (107.29)
Thu 2 AMCaution23913%10 mi400 ft61°night: lighting and night training required (107.29)
Thu 3 AMCaution23916%10 mi400 ft60°night: lighting and night training required (107.29)
Thu 4 AMCaution261218%10 mi400 ft60°night: lighting and night training required (107.29)
Thu 5 AMCaution381417%10 mi400 ft60°night: lighting and night training required (107.29)
Thu 6 AMCaution381523%10 mi400 ft60°night: lighting and night training required (107.29)
Thu 7 AMCaution351221%10 mi400 ft60°civil twilight: lighting required (107.29)
Thu 8 AMGood561316%10 mi400 ft60°nothing against it
Thu 9 AMGood671511%10 mi400 ft62°nothing against it
Thu 10 AMGood79178%10 mi64°nothing against it
Thu 11 AMGood78174%10 mi67°nothing against it
Thu 12 PMGood810183%10 mi70°nothing against it
Thu 1 PMCaution810193%10 mi73°gusts near or over your limit

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

  • Wed 2 PM to 7 PM 5 hours, every hour within the rules
  • Sat 10 AM to 11 PM 13 hours, every hour within the rules
  • Sun 10 AM to 9 PM 11 hours, every hour within the rules
  • Mon 10 PM to Tue 12 AM 2 hours, every hour within the rules
  • Tue 10 AM to 6 PM 8 hours, every hour within the rules
  • Wed 9 AM to 5 PM 8 hours, every hour within the rules
Wed6 PM
Thu12 AM6 AM12 PM6 PM
Fri12 AM6 AM12 PM6 PM
Sat12 AM6 AM12 PM6 PM

Good Marginal No

Field days

DayDaytimeChance of rainRainLowest humidityStrongest windDry days in a rowHay drying
WednesdayDry0%0.00 in61%7 mph2 d
ThursdayDry16%0.01 in56%9 mph1 d
FridayWet94%0.31 in78%10 mph
SaturdayDry0%0.00 in43%5 mph5 d
SundayDry5%0.00 in56%7 mph4 d
MondayDry1%0.00 in44%10 mph3 dGood
TuesdayDry0%0.00 in44%5 mph2 d
WednesdayDry1%0.00 in44%7 mph1 dGood

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
Wed Poor3:02 AM to 5:02 AM3:31 PM to 5:31 PM11:25 AM to 12:25 PM8:32 PM to 9:32 PM 83%7:11 AM, 6:59 PM
Thu Fair4:02 AM to 6:02 AM4:33 PM to 6:33 PM12:39 PM to 1:39 PM9:25 PM to 10:25 PM 74%7:12 AM, 6:58 PM
Fri Fair5:04 AM to 7:04 AM5:36 PM to 7:36 PM1:44 PM to 2:44 PM10:29 PM to 11:29 PM 64%7:14 AM, 6:56 PM
Sat Fair6:07 AM to 8:07 AM6:37 PM to 8:37 PM2:38 PM to 3:38 PM 54%7:15 AM, 6:54 PM
Sun Fair7:07 AM to 9:07 AM7:36 PM to 9:36 PM11:41 PM to 12:41 AM3:22 PM to 4:22 PM 43%7:16 AM, 6:53 PM
Mon Fair8:03 AM to 10:03 AM8:29 PM to 10:29 PM12:57 AM to 1:57 AM3:56 PM to 4:56 PM 33%7:17 AM, 6:51 PM
Tue Poor8:55 AM to 10:55 AM9:19 PM to 11:19 PM2:12 AM to 3:12 AM4:24 PM to 5:24 PM 23%7:18 AM, 6:49 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° · SW 7 mph

    Mostly cloudy, with a high near 71. Southwest wind around 7 mph.

  2. Tonight60° · 18% · S 3 mph

    Isolated rain showers after 3am. Mostly cloudy, with a low around 60. South wind around 3 mph. Chance of precipitation is 20%.

  3. Thursday78° · 23% · SW 3–9 mph

    Isolated rain showers before 9am. Partly sunny, with a high near 78. Southwest wind 3 to 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

  4. Thursday Night64° · 4% · SW 8 mph

    Mostly cloudy, with a low around 64. Southwest wind around 8 mph, with gusts as high as 21 mph.

  5. Friday72° · 94% · W 10 mph

    Rain showers after 7am. Mostly cloudy, with a high near 72. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

  6. Friday Night42° · 90% · N 3–8 mph

    Rain showers before 8pm. Partly cloudy, with a low around 42. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.

  7. Saturday66° · NE 5 mph

    Sunny, with a high near 66.

  8. Saturday Night44° · 1% · E 5 mph

    Mostly clear, with a low around 44.

  9. Sunday67° · 5% · S 7 mph

    Mostly sunny, with a high near 67.

  10. Sunday Night46° · 5% · W 1–5 mph

    Partly cloudy, with a low around 46.

  11. Monday62° · 2% · NW 2–10 mph

    Mostly sunny, with a high near 62.

  12. Monday Night36° · N 2–9 mph

    Areas of frost after 3am. Mostly clear, with a low around 36.

  13. Tuesday58° · N 5 mph

    Areas of frost before 9am. Sunny, with a high near 58.

  14. Tuesday Night36° · NE 2 mph

    Mostly clear, with a low around 36.

The forecaster’s discussion

NWS Pittsburgh, PA · issued Sep 30, 1:18 PM 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

Rain chances for the weekend continue to gradually shift southward, otherwise no major changes were made to the latest forecast.

KEY Messages

1) Shower chances tonight north of Pittsburgh, then dry and warm Thursday. Showers return with a Friday cold front.

2) Cooler and mainly dry from this weekend into early next week

Discussion

KEY MESSAGE 1... A ridge of high pressure will maintain dry weather into this evening. Much of the area should remain dry tonight, though a weak shortwave is progged to advance eastward tonight, crossing the Lower Great Lakes region. This wave, and warm advection, should produce scattered showers for area north of PIT overnight.

Ridging is expected to strengthen again across the Upper Ohio Valley region on Thursday, ahead of a trough approaching from the Midwest. Dry and warm weather is expected, with highs around 10 degrees above average.

The shortwave, and an associated surface cold front, is expected to approach and cross the region on Friday. The progression of the front has increased some, resulting in a faster arrival of cloud cover and showers. This will further limit any possible destabilization. Shear does increase with faster flow aloft, though ML CAPE is progged to remain below 250 j/kg. This should limit not only the severe weather potential, but the overall chances for thunder. Showers are expected though, with the area in the right entrance region to an upper jet. Generally expected 1/4 to 1/2 inch of rain with the front, with NBM probabilities for an inch of rain at 20 percent or less.

KEY MESSAGE 2... Model ensembles indicate broad upper troughing should persist across the NE CONUS from the weekend into the middle of next week. A southern stream shortwave could bring a few showers to areas south of PIT on Sunday, otherwise mainly dry and seasonably cool weather is expected through the period as surface high pressure builds under the broad trough by early next week.

Aviation · 18Z Wednesday Through Monday

VFR conditions are forecast for most of the TAF period as high pressure ridging is forecast. Mostly scattered cumulus may continue to provided an occasional MVFR ceiling at DUJ this afternoon. Southerly wind of 5 to 10 knots persists through sunset.

Mainly mid and upper clouds are forecast tonight, which should help to keep fog less widespread as compared to this morning. Clouds may be thin enough to allow some development near ZZV and MGW towards sunrise though, and have used TEMPOs for this. In addition, a weak shortwave riding on top of the ridge may produce scattered showers north of I-80 overnight. PROB30 groups were used at FKL and DUJ.

Past sunrise, VFR conditions continue as the ridge intensifies a bit. Southwest wind around 10 knots is forecast with the onset of diurnal mixing.

Outlook... Restrictions in showers are likely with a Friday cold front. Restrictions are possible south of I-70 Saturday, and across the remainder of the area Sunday, with crossing disturbances.

PBZ Watches / Warnings / Advisories

PA...None. OH...None. WV...None.

Hazardous weather outlook Sep 30, 1:09 PM EDT

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

FLUS41 KPBZ 301709
HWOPBZ

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
109 PM EDT Wed Sep 30 2026

OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029-
031-073>078-WVZ001>004-012-021-509>514-011715-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest-
Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny-Armstrong-
Washington-Greene-Westmoreland-Higher Elevations of Westmoreland-
Fayette-Higher Elevations of Fayette-Indiana-
Higher Elevations of Indiana-Hancock-Brooke-Ohio-Marshall-Wetzel-
Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
109 PM EDT Wed Sep 30 2026

This Hazardous Weather Outlook is for east central Ohio, western 
Pennsylvania, and northern West Virginia.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

WM

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

Rainfall

  1. Day 1 · Wed Sep 30Under 0.01 in
  2. Day 2 · Thu Oct 10.10 in
  3. Day 3 · Fri Oct 2Under 0.01 in
  4. Day 4-5 · Oct 3–Oct 4Under 0.01 in
  5. Day 6-7 · Oct 5–Oct 6Under 0.01 in

The rainfall forecast on the map, days 1 to 7

Six to fourteen days

  1. Days 6–10 · Temperature33% chance below normalOct 5–Oct 9
  2. Days 6–10 · PrecipitationNear normal most likelyOct 5–Oct 9
  3. Days 8–14 · Temperature33% chance below normalOct 7–Oct 13
  4. Days 8–14 · PrecipitationNear normal most likelyOct 7–Oct 13

Frost and climate

NOAA 1991-2020 normals, Dubois Jefferson CO AP

The last spring freeze (32°F) usually comes around May 6 and the first fall freeze around October 14: a growing season of about 160 days.

One fall in ten brings a freeze by September 29; one spring in ten still has one after May 23.

Climate of 41.07, -78.94: normals, records and every month

Everything else on the grid

NWS forecast grid · 29 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.

ElementWedThuFriSatSunMonTueWed
HeatRisk max1 · Minor1 · Minor1 · Minor1 · Minor0 · Little0 · Little0 · Little0 · Little
Wet bulb globe temperature max70°74°69°64°65°58°58°
Heat index max71°77°
Wind chill min40°41°40°36°34°
Chance of thunder max2%2%9%0%2%2%0%4%
Cloud ceiling min12,500 ft7,300 ft5,100 ft
Visibility min0.6 mi9 mi10 mi
Pressure min0.01 inHg0.01 inHg0.01 inHg0.01 inHg
Mixing height max3,800 ft3,400 ft2,000 ft600 ft
Transport wind max12 mph18 mph16 mph10 mph
Twenty-foot wind max5 mph8 mph9 mph5 mph
Atmospheric dispersion index max4768306
Low visibility risk max9679

Against the record

NOAA GHCN · Du Bois (Awos) (DUJ) · 7.7 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
Wed Sep 3071° / 53°62° / 44°81° (1986)31° (1993)
Thu Oct 178° / 64°66° / 45°86° (2019)29° (1993)
Fri Oct 272° / 42°65° / 46°85° (2019)28° (1974)
Sat Oct 366° / 44°67° / 47°83° (2023)26° (1974)
Sun Oct 467° / 46°64° / 46°82° (2007)24° (1974)
Mon Oct 562° / 36°62° / 44°83° (2007)28° (1965)
Tue Oct 658° / 36°65° / 42°84° (2007)25° (1965)
Wed Oct 764° / 44°65° / 44°82° (2007)25° (1964)

Sun and moon

DayCivil twilightSunriseSunsetCivil twilightDaylightMoon
Wed6:44 AM7:11 AM6:59 PM7:27 PM11 h 48 min Waning gibbous · 83% lit
Thu6:45 AM7:12 AM6:58 PM7:25 PM11 h 46 min Waning gibbous · 74% lit
Fri6:46 AM7:14 AM6:56 PM7:23 PM11 h 42 min Waning gibbous · 64% lit
Sat6:47 AM7:15 AM6:54 PM7:22 PM11 h 39 min Last quarter · 54% lit
Sun6:48 AM7:16 AM6:53 PM7:20 PM11 h 37 min Last quarter · 43% lit
Mon6:49 AM7:17 AM6:51 PM7:18 PM11 h 34 min Waning crescent · 33% lit
Tue6:50 AM7:18 AM6:49 PM7:17 PM11 h 31 min Waning crescent · 23% lit
Wed6:51 AM7:19 AM6:48 PM7:15 PM11 h 29 min Waning crescent · 15% 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