Current weather · Oct 1, 10:50 AM EDT

41.1900, -76.9800

60°

Slight chance of very light rainFeels like 60° · Humidity 96%NWS forecast for this hour; no recent station reportForecast by NWS State College, PA · grid 97,79
High
73°
Low
60°
Rain today
25%
Sunrise
7:05 AM
Sunset
6:50 PM

Hour by hour

NWS forecast grid

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

Every hour as a table48 hours
TimeWeatherTemperatureFeels likeDew pointHumidityChanceAmountSnowDirWindGustSky coverThunderPressureVisibilityCeiling
Thu 10 AMSlight chance of very light rain60°60°59°96%15%SSE2 mph6 mph89%——
Thu 11 AM61°61°59°93%10%S2 mph6 mph84%——
Thu 12 PM64°64°60°87%8%S3 mph8 mph79%——
Thu 1 PM66°66°61°84%6%S3 mph8 mph74%——
Thu 2 PM69°69°61°76%4%S5 mph10 mph69%——
Thu 3 PM71°71°62°73%4%S5 mph10 mph47%——
Thu 4 PM72°72°62°71%4%SSW6 mph13 mph56%——
Thu 5 PM73°73°62°68%4%SSW5 mph10 mph35%——
Thu 6 PM72°72°63°73%3%S5 mph9 mph32%——
Thu 7 PM69°69°62°78%3%S5 mph9 mph36%——
Thu 8 PM68°68°61°78%3%SSW6 mph8 mph34%——
Thu 9 PM66°66°61°84%2%SSW6 mph8 mph45%——
Thu 10 PM65°65°60°84%2%SSW6 mph8 mph57%——
Thu 11 PM65°65°59°81%2%SW5 mph7 mph68%——
Fri 12 AM64°64°59°84%1%SW3 mph6 mph62%——
Fri 1 AM63°63°59°87%1%SSW3 mph6 mph56%——
Fri 2 AM63°63°58°84%1%SW3 mph6 mph50%——
Fri 3 AM62°62°58°87%1%S3 mph6 mph52%——
Fri 4 AM62°62°58°87%1%SSW3 mph6 mph53%——
Fri 5 AM61°61°57°87%1%WSW2 mph6 mph55%——
Fri 6 AM61°61°57°87%0%SSW3 mph6 mph55%——
Fri 7 AM60°60°57°90%1%SSE3 mph6 mph54%——
Fri 8 AM61°61°57°87%12%WSW3 mph7 mph54%3%——
Fri 9 AMSlight chance of light rain showers63°63°59°87%18%W3 mph8 mph60%3%——
Fri 10 AMSlight chance of light rain showers66°66°59°78%23%SW5 mph10 mph66%3%——
Fri 11 AMSlight chance of light rain showers68°68°60°76%24%WSW7 mph15 mph72%4%——
Fri 12 PMChance of light rain showers69°69°61°76%30%WSW8 mph18 mph74%4%——
Fri 1 PMChance of light rain showers70°70°62°76%33%W10 mph20 mph77%4%——
Fri 2 PMChance of light rain showers69°69°62°78%37%0.01 inW10 mph20 mph79%3%——
Fri 3 PMChance of light rain showers69°69°63°81%53%0.01 inWNW10 mph20 mph85%3%——
Fri 4 PMLight rain showers likely68°68°63°84%70%0.01 inWNW10 mph20 mph92%3%——
Fri 5 PMLight rain showers65°65°62°90%78%0.01 inNW9 mph18 mph98%1%——
Fri 6 PMLight rain showers likely63°63°60°90%59%0.01 inNW10 mph18 mph97%1%——
Fri 7 PMChance of light rain showers62°62°58°87%29%0.01 inNW13 mph18 mph95%1%——
Fri 8 PM61°61°56°84%14%NW15 mph18 mph94%——
Fri 9 PM59°59°55°87%14%NNW16 mph20 mph85%——
Fri 10 PM57°57°54°90%14%NNW16 mph20 mph76%——
Fri 11 PM56°56°52°86%14%NNW15 mph18 mph67%——
Sat 12 AM55°55°51°86%14%NNW15 mph18 mph52%——
Sat 1 AM53°53°49°86%14%NNW15 mph17 mph38%——
Sat 2 AM52°52°48°86%0%NNW15 mph17 mph23%——
Sat 3 AM51°51°47°86%0%NNW14 mph16 mph22%——
Sat 4 AM50°45°46°86%0%NNW13 mph16 mph20%——
Sat 5 AM50°46°46°86%0%NNW12 mph15 mph19%——
Sat 6 AM49°45°46°89%0%NNW10 mph14 mph17%——
Sat 7 AM48°44°46°93%0%NNW9 mph13 mph16%——
Sat 8 AM48°44°46°93%0%NNW8 mph13 mph14%——
Sat 9 AM50°47°45°83%0%NNW8 mph13 mph12%——

The next 16 days

NWS grid published Oct 1, 8:06 AM EDT to day 8, the National Blend of Models to day 11, the mean of GFS, ECMWF, ECMWF AI to day 16
  1. TodayOct 173°60°Slight Chance Very Light Rain then Partly Sunny25%wind 6 mph · gusts 13 mph
  2. FriOct 270°48°Rain Showers78%0.06 inwind 16 mph
  3. SatOct 362°44°Sunny14%wind 15 mph
  4. SunOct 460°49°Partly Sunny then Slight Chance Rain Showers22%wind 9 mph · gusts 17 mph
  5. MonOct 562°39°Mostly Sunny8%wind 15 mph · gusts 21 mph
  6. TueOct 655°36°Sunny0%wind 15 mph
  7. WedOct 760°43°Areas Of Frost then Sunny0%wind 9 mph · gusts 17 mph
  8. ThuOct 864°46°6%wind 7 mph · gusts 15 mph
  9. FriOct 965°45°National Blend4%wind 9 mph · gusts 16 mph
  10. SatOct 1063°47°National Blend9%wind 8 mph · gusts 16 mph
  11. SunOct 1164°48°National Blend25%0.15 inwind 9 mph · gusts 18 mph
  12. MonOct 12~63°54°Model mean0.18 in
  13. TueOct 13~59°48°Model mean0.09 in
  14. WedOct 14~59°42°Model mean
  15. ThuOct 15~52°37°Model mean
  16. FriOct 16~58°32°Model mean

Right now

NWS grid for this hour · UV from the EPA · air quality from AirNow
  • Feels like60°
  • WindSSE 2 mphgusts 6 mph
  • Radar over this pointno reading
  • Humidity96%
  • Dew point59°
  • Pressure—
  • UV index—
  • Air quality—
  • Visibility—
  • Sunrise and sunsetSunrise · Sunset
  • Moonrise9:46 PMMoonset 1:01 PM
  • Moon phaseWaning gibbous74% lit

The National Blend of Models

NOAA NBM v5.0 · run of Oct 1, 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. TodayOct 175°61°NWS grid 73° / 60°rain 24%wind 6 mph · gusts 13 mph
  2. FriOct 273°48°NWS grid 70° / 48°rain 52%0.03 inwind 15 mph
  3. SatOct 364°45°NWS grid 62° / 44°rain 1%wind 15 mph
  4. SunOct 462°49°NWS grid 60° / 49°rain 18%0.02 inwind 9 mph · gusts 17 mph
  5. MonOct 563°40°NWS grid 62° / 39°rain 2%wind 17 mph
  6. TueOct 657°36°NWS grid 55° / 36°rain 0%wind 17 mph
  7. WedOct 760°43°NWS grid 60° / 43°rain 2%wind 9 mph · gusts 16 mph
  8. ThuOct 866°46°NWS grid 64° / 46°rain 5%wind 7 mph · gusts 14 mph
  9. FriOct 965°45°Beyond the NWS gridrain 4%wind 9 mph · gusts 16 mph
  10. SatOct 1063°47°Beyond the NWS gridrain 9%wind 8 mph · gusts 16 mph
  11. SunOct 1164°48°Beyond the NWS gridrain 25%0.15 inwind 9 mph · gusts 18 mph
32°55°77°FriSatSunMonTueWedThu

BlendNWS gridChance of rain, hourly

The models, side by side

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

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

32°55°77°FriSatSunMonTueWedThu

DayNWS gridHRRRGFSGEFSECMWFECMWF AI
Today Oct 173° 60°73° 60°76° 59°75° 59°~69° 66°0.04 in~76° 71°
Fri Oct 270° 48°0.06 in74° 54°0.04 in73° 52°0.28 in72° 54°0.14 in74° 55°0.14 in~74° 63°0.08 in
Sat Oct 362° 44°53° 49°65° 45°65° 45°~58° 49°~67° 50°
Sun Oct 460° 49°—61° 43°62° 44°0.08 in60° 51°~59° 49°0.04 in
Mon Oct 562° 39°—61° 40°62° 42°0.02 in~61° 48°~61° 51°
Tue Oct 655° 36°—58° 33°55° 35°59° 42°~57° 37°
Wed Oct 760° 43°—62° 35°60° 34°~61° 39°~64° 38°
Thu Oct 864° 46°—67° 40°64° 41°0.02 in~66° 45°~71° 45°
Fri Oct 9——60° 41°64° 45°0.03 in~69° 49°~59° 52°
Sat Oct 10——63° 36°62° 43°0.03 in~70° 45°~47° 46°
Sun Oct 11——~76° 45°~44° 44°~70° 48°~72° 54°0.05 in
Mon Oct 12——~58° 44°0.11 in—~65° 56°0.11 in~67° 60°0.31 in
Tue Oct 13——~56° 44°—~62° 56°~60° 45°0.26 in
Wed Oct 14——~60° 44°0.02 in—~64° 44°~52° 37°
Thu Oct 15——~50° 38°—~71° 47°~54° 37°0.01 in
Fri Oct 16——~58° 32°———

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 Williamsport (IPT) · Climate Prediction Center outlooks

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

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

0°20°40°60°80°TodayNov 1Dec 1

Forecast high and lowNormal high and lowRecord high and low

Week ofNormalWarmest on recordColdest on recordTemperature leanPrecipitation lean
Oct 168° / 48°91° (1951)27° (1965)no outlookno outlook
Oct 866° / 45°90° (2007)26° (1972)no outlookno outlook
Oct 1563° / 40°84° (2016)20° (1972)no outlookno outlook
Oct 2260° / 40°82° (2020)20° (1969)no outlookno outlook
Oct 2958° / 38°83° (1950)20° (1951)no outlookno outlook
Nov 554° / 33°77° (1994)18° (1952)no outlookno outlook
Nov 1252° / 35°72° (1993)13° (1986)no outlookno outlook
Nov 1948° / 32°70° (1991)11° (2018)no outlookno outlook
Nov 2648° / 32°70° (2006)5° (1976)no outlookno outlook
Dec 342° / 28°69° (1998)3° (2002)no outlookno outlook
Dec 1039° / 26°65° (1966)-5° (1977)no outlookno outlook
Dec 1737° / 23°64° (2018)-11° (1951)no outlookno outlook
Dec 2437° / 23°67° (1984)-15° (1950)no outlookno outlook

Health and activities

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

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

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

Health

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

Outdoors

  • RunningtodayVery goodhot
  • HikingtodayIdealfine conditions
  • BikingtodayIdealfine conditions
  • GolftodayIdealfine conditions
  • FishingtodayIdealfine conditions
  • Boating and paddlingtodayIdealfine conditions
  • Beach and pooltodayVery goodfine conditions
  • CampingtonightIdealfine conditions
  • StargazingtonightPoormostly cloudy

Travel

  • Air travelnext 24 hIdealclear skies
  • Drivingnext 24 hIdealclear roads

Home and garden

  • Lawn mowingtodayIdealfine conditions
  • GardeningtodayIdealfine conditions
  • Outdoor entertainingtodayIdealfine conditions
  • Drying laundry outsidetodayGoodhumid
  • Painting and outdoor projectstodayVery goodhumid
  • FrosttonightLowmild

Pests

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

Stargazing

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

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

Night ofRatingDarkClear hoursClear and moonlessMoon litTransparency (est.)DewStrongest wind
ThursdayPoor8:21 PM to 5:34 AM0 of 10None71%6 mph
FridayFair8:20 PM to 5:35 AM2 of 10None60%Poor1 h16 mph
SaturdayGood8:18 PM to 5:36 AM8 of 104 h from 8:00 PM50%Poor4 h6 mph
SundayPoor8:16 PM to 5:37 AM0 of 10None39%8 h5 mph
MondayGood8:14 PM to 5:38 AM10 of 107 h from 8:00 PM29%Fair15 mph
TuesdayGood8:13 PM to 5:39 AM10 of 1010 h from 8:00 PM20%Fair1 h2 mph
WednesdayGood8:11 PM to 5:40 AM6 of 106 h from 8:00 PM12%Fair3 h8 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
Thu6:37 AM to 6:48 AM6:48 AM to 7:41 AM6:13 PM to 7:07 PM7:07 PM to 7:17 PM
Fri6:38 AM to 6:49 AM6:49 AM to 7:42 AM6:11 PM to 7:05 PM7:05 PM to 7:15 PM
Sat6:39 AM to 6:50 AM6:50 AM to 7:43 AM6:10 PM to 7:03 PM7:03 PM to 7:14 PM
Sun6:40 AM to 6:51 AM6:51 AM to 7:45 AM6:08 PM to 7:02 PM7:02 PM to 7:12 PM
Mon6:41 AM to 6:52 AM6:52 AM to 7:46 AM6:06 PM to 7:00 PM7:00 PM to 7:11 PM
Tue6:42 AM to 6:53 AM6:53 AM to 7:47 AM6:05 PM to 6:58 PM6:58 PM to 7:09 PM
Wed6:43 AM to 6:54 AM6:54 AM to 7:48 AM6:03 PM to 6:57 PM6:57 PM to 7:07 PM
NESWSRSSMRMS
  • SR Sunrise 7:05 AM, 94° E
  • SS Sunset 6:50 PM, 266° W
  • MR Moonrise 9:46 PM, 52° NE
  • MS Moonset 1:01 PM, 308° NW
  • Waning gibbous, 74% lit

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

Drone flying

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

This hour: good to fly. Next good stretch: Thu 10 AM to 6 PM, 8 hours.

Today: civil twilight for Part 107 6:35 AM to sunrise 7:05 AM, and sunset 6:50 PM to 7:20 PM. Anti-collision lighting is required in those minutes and at night.

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

Good Caution No-fly

HourVerdictWind (mph)400 ft est. (mph)Gust (mph)RainVisibilityCloud allowsTempKpWhy
Thu 10 AMGood23715%60°nothing against it
Thu 11 AMGood23710%61°nothing against it
Thu 12 PMGood3498%64°nothing against it
Thu 1 PMGood3496%66°nothing against it
Thu 2 PMGood56124%69°nothing against it
Thu 3 PMGood56124%71°nothing against it
Thu 4 PMGood67144%72°nothing against it
Thu 5 PMGood56124%73°nothing against it
Thu 6 PMCaution56113%72°civil twilight: lighting required (107.29)
Thu 7 PMCaution518233%69°wind at 400 ft near or over your limit, gusts near or over your limit, night: lighting and night training required (107.29)
Thu 8 PMNo-fly623253%68°gusts near or over your limit, wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Thu 9 PMNo-fly623252%66°gusts near or over your limit, wind at 400 ft near or over your limit, night: lighting and night training required (107.29)
Thu 10 PMCaution614162%65°night: lighting and night training required (107.29)
Thu 11 PMCaution511132%65°night: lighting and night training required (107.29)
Fri 12 AMCaution38111%64°night: lighting and night training required (107.29)
Fri 1 AMCaution38111%63°night: lighting and night training required (107.29)
Fri 2 AMCaution38111%63°night: lighting and night training required (107.29)
Fri 3 AMCaution38111%62°night: lighting and night training required (107.29)
Fri 4 AMCaution38111%62°night: lighting and night training required (107.29)
Fri 5 AMCaution2691%61°night: lighting and night training required (107.29)
Fri 6 AMCaution38110%61°night: lighting and night training required (107.29)
Fri 7 AMCaution3461%60°civil twilight: lighting required (107.29)
Fri 8 AMGood34812%61°nothing against it
Fri 9 AMGood34918%63°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

  • Thu 2 PM to 9 PM 7 hours, every hour within the rules
  • Sat 10 AM to 11 PM 13 hours, every hour within the rules
  • Sun 10 AM to 12 PM 2 hours, every hour within the rules
  • Sun 5 PM to 9 PM 4 hours, every hour within the rules
  • Tue 9 AM to 8 PM 11 hours, every hour within the rules
  • Wed 10 AM to 2 PM 4 hours, every hour within the rules
  • Wed 6 PM to Thu 12 AM 6 hours, every hour within the rules
  • Thu 10 AM to 5 PM 7 hours, every hour within the rules
Thu12 PM6 PM
Fri12 AM6 AM12 PM6 PM
Sat12 AM6 AM12 PM6 PM
Sun12 AM6 AM12 PM6 PM

Good Marginal No

Field days

DayDaytimeChance of rainRainLowest humidityStrongest windDry days in a rowHay drying
ThursdayDry25%0.00 in68%6 mph1 d
FridayShowers possible78%0.06 in76%13 mph
SaturdayDry0%0.00 in48%8 mph6 dGood
SundayDry22%0.00 in64%9 mph5 d
MondayDry0%0.00 in46%14 mph4 dGood
TuesdayDry0%0.00 in43%9 mph3 dGood
WednesdayDry0%0.00 in47%9 mph2 dGood
ThursdayDry6%0.00 in58%7 mph1 d

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

Solunar times

Computed from the moon’s position

The best-rated day this week is Wednesday, rated good.

DayRatingMajor periodsMinor periodsMoonSunrise, sunset
Thu Fair3:54 AM to 5:54 AM4:25 PM to 6:25 PM12:31 PM to 1:31 PM9:16 PM to 10:16 PM 74%7:05 AM, 6:50 PM
Fri Fair4:56 AM to 6:56 AM5:28 PM to 7:28 PM1:36 PM to 2:36 PM10:20 PM to 11:20 PM 64%7:06 AM, 6:48 PM
Sat Fair5:59 AM to 7:59 AM6:29 PM to 8:29 PM2:31 PM to 3:31 PM 54%7:07 AM, 6:46 PM
Sun Fair6:59 AM to 8:59 AM7:27 PM to 9:27 PM11:33 PM to 12:33 AM3:14 PM to 4:14 PM 43%7:08 AM, 6:45 PM
Mon Fair7:55 AM to 9:55 AM8:21 PM to 10:21 PM12:48 AM to 1:48 AM3:48 PM to 4:48 PM 33%7:09 AM, 6:43 PM
Tue Poor8:47 AM to 10:47 AM9:11 PM to 11:11 PM2:04 AM to 3:04 AM4:16 PM to 5:16 PM 23%7:10 AM, 6:41 PM
Wed Good9:35 AM to 11:35 AM9:58 PM to 11:58 PM3:17 AM to 4:17 AM4:41 PM to 5:41 PM 15%7:11 AM, 6:40 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. Today73° · 15% · S 2–6 mph

    A slight chance of rain before 11am. Partly sunny, with a high near 73. South wind 2 to 6 mph. Chance of precipitation is 20%.

  2. Tonight60° · 3% · SW 2–6 mph

    Partly cloudy, with a low around 60. Southwest wind 2 to 6 mph.

  3. Friday70° · 78% · SW 3–10 mph

    Rain showers after 9am. Mostly cloudy, with a high near 70. Southwest wind 3 to 10 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.

  4. Friday Night48° · 59% · NW 10–16 mph

    Rain showers likely before 8pm. Mostly cloudy, with a low around 48. Northwest wind 10 to 16 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

  5. Saturday62° · N 5–10 mph

    Sunny, with a high near 62. North wind 5 to 10 mph.

  6. Saturday Night44° · 2% · NE 6 mph

    Mostly clear, with a low around 44.

  7. Sunday60° · 22% · SE 3–9 mph

    A slight chance of rain showers after 2pm. Partly sunny, with a high near 60.

  8. Sunday Night49° · 22% · SW 6 mph

    A slight chance of rain showers before 8pm. Mostly cloudy, with a low around 49.

  9. Monday62° · 2% · NW 5–14 mph

    Mostly sunny, with a high near 62.

  10. Monday Night39° · NW 12–15 mph

    Mostly clear, with a low around 39.

  11. Tuesday55° · NW 5–10 mph

    Sunny, with a high near 55.

  12. Tuesday Night36° · N 3 mph

    Mostly clear, with a low around 36.

  13. Wednesday60° · E 1–9 mph

    Areas of frost before 8am. Sunny, with a high near 60.

  14. Wednesday Night43° · 1% · S 2–9 mph

    Mostly clear, with a low around 43.

The forecaster’s discussion

NWS State College, PA · issued Oct 1, 6:33 AM EDT

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

What Has Changed

No significant changes

KEY Messages

1) Unseasonably warm start to October precedes weekend cooldown and frost/freeze risk early next week

2) Not much rain expected for the first 10 days of October

Discussion

KEY MESSAGE 1: Unseasonably warm start to October precedes weekend cooldown and frost/freeze risk early next week

Late week warm spell fades into the first weekend of October. Max temps are projected to peak 10-15 degrees above the historical average today/tomorrow before trending seasonably cooler over the weekend into next week. The cooldown will be highlighted by frost potential across the western and central Alleghenies Monday and Tuesday night with min temps near the freezing mark across the northern tier.

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KEY MESSAGE 2: Not much rain expected for the first 7-10 days of October

We see 2-3 limited opportunities for rain over the next 7+ days in CPA. The first is this morning over the northern tier where observed precip has been largely negligible to barely measurable. The second will occur on Friday as cold front slicing to the southeast from the eastern Great Lakes triggers more widespread light to moderate shower activity. The 3rd window for rain is on Sunday focused mainly over the southern and eastern portions of the CWA. High confidence in a dry stretch for much of next week as large area of Canadian high pressure dominates the pattern.

Aviation · 12Z Thursday Through Monday

Light rain will continue at BFD and possible IPT for a few more hours before gradually tapering off through the morning. Mainly dry conditions are expected after 14Z under varying amounts of mid and high clouds, along with west-southwest winds at 5 to 10 knots. A few gusts to 20 knots may be possible at BFD and JST during the afternoon. Cloud cover increases once again into Friday morning ahead of an approaching cold front. Any rain associated with this front likely holds off until right around 12Z Friday. LLWS will be a concern into Friday morning as a 40 to 60 knot southwesterly low-level jet moves in from the west. Wind shear is most likely at BFD and JST, though AOO, UNV, and IPT could may see LLWS develop after 06Z.

Some fog may form across northern PA tonight, though this is dependent on just how clear skies are able to get before high clouds move in ahead of the front. If fog were to develop, BFD and IPT would be most likely to see ceiling and visibility restrictions. Regardless of fog formation, IFR or LIFR ceilings appear likely to develop at BFD in the 10-12Z timeframe as rain begins to move in.

Outlook...

Fri...Cold FROPA with showers along the front.

Sat...VFR favored behind the FROPA. AM fog possible.

Sun...Restrictions possible as a weak low pressure system develops along the residual frontal boundary over the Mid- Atlantic. -RA possible, more so across southern and eastern PA.

Mon...Dry conditions with VFR prevailing.

Climate

September 2026 precipitation rankings

IPT: 11th wettest (6.84") MDT: 26th wettest (4.72") AOO: 9th wettest (5.58") BFD: 10th wettest (4.85") JST: 3rd wettest (7.31") *since 2000 STC: 6th wettest (7.90")

CTP Watches / Warnings / Advisories

None.

Hazardous weather outlook Oct 1, 3:22 AM EDT

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

FLUS41 KCTP 010722
HWOCTP

Hazardous Weather Outlook
National Weather Service State College PA
322 AM EDT Thu Oct 1 2026

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-020730-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-
Juniata-Somerset-Bedford-Fulton-Franklin-Tioga-Northern Lycoming-
Sullivan-Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
322 AM EDT Thu Oct 1 2026

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Frost could harm sensitive unprotected vegetation Monday night and
Tuesday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

MRS

The outlooks beyond

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

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

Reading the outlooks…

Frost and climate

NOAA 1991-2020 normals, Williamsport 2

The last spring freeze (32°F) usually comes around April 25 and the first fall freeze around October 24: a growing season of about 181 days.

One fall in ten brings a freeze by October 8; one spring in ten still has one after May 12.

Climate of 41.19, -76.98: normals, records and every month

Everything else on the grid

NWS forecast grid · 27 elements

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

ElementThuFriSatSunMonTueWedThu
HeatRisk max1 · Minor1 · Minor1 · Minor0 · Little0 · Little0 · Little0 · Little0 · Little
Wet bulb globe temperature max69°68°58°57°57°50°55°59°
Heat index max73°70°
Wind chill min44°44°41°32°37°43°
Chance of thunder max0%4%0%4%2%0%0%3%
Mixing height max2,400 ft3,200 ft5,000 ft3,200 ft6,600 ft4,800 ft3,600 ft4,400 ft
Transport wind max9 mph17 mph15 mph13 mph16 mph15 mph14 mph14 mph
Twenty-foot wind max5 mph13 mph12 mph7 mph12 mph12 mph7 mph6 mph
Davis stability index max11
Atmospheric dispersion index max284555
Low visibility risk max766

Against the record

NOAA GHCN · Williamsport (IPT) · 4.8 mi away

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

DayForecastNormalRecord highRecord low
Thu Oct 173° / 60°68° / 46°85° (1954)31° (1993)
Fri Oct 270° / 48°69° / 48°89° (2019)33° (1958)
Sat Oct 362° / 44°69° / 48°84° (1951)30° (1974)
Sun Oct 460° / 49°68° / 48°85° (2007)28° (1948)
Mon Oct 562° / 39°67° / 47°91° (1951)31° (1965)
Tue Oct 655° / 36°67° / 45°85° (1959)27° (1965)
Wed Oct 760° / 43°68° / 47°86° (1963)30° (1966)
Thu Oct 864° / 46°68° / 45°90° (2007)28° (1954)

Sun and moon

DayCivil twilightSunriseSunsetCivil twilightDaylightMoon
Thu6:37 AM7:05 AM6:50 PM7:17 PM11 h 45 min Waning gibbous · 74% lit
Fri6:38 AM7:06 AM6:48 PM7:15 PM11 h 42 min Waning gibbous · 64% lit
Sat6:39 AM7:07 AM6:46 PM7:14 PM11 h 39 min Last quarter · 54% lit
Sun6:40 AM7:08 AM6:45 PM7:12 PM11 h 37 min Last quarter · 43% lit
Mon6:41 AM7:09 AM6:43 PM7:11 PM11 h 34 min Waning crescent · 33% lit
Tue6:42 AM7:10 AM6:41 PM7:09 PM11 h 31 min Waning crescent · 23% lit
Wed6:43 AM7:11 AM6:40 PM7:07 PM11 h 29 min Waning crescent · 15% lit
Thu6:44 AM7:12 AM6:38 PM7:06 PM11 h 26 min Waning crescent · 8% lit

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

What is here

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

Common questions

Where does this forecast come from?

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

How far ahead does it go?

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

Why is this different from the app on my phone?

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

What is a place’s address here?

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

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