National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Williamsport - Lycoming County Airport (KIPT)

Lat: 41.24°NLon: 76.92°WElev: 522ft.

Fair

70°F

21°C

Humidity 44%
Wind Speed NW 8 mph
Barometer 30.25 in (1024.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 3 Oct 1:54 pm EDT
Extended Forecast for

Castanea PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 69. Northeast wind 3 to 5 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of light rain, mainly between 9am and 2pm. Mostly cloudy, with a high near 61. Light and variable wind becoming southeast around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Chance Light
    Rain

  • Sunday Night

    Sunday Night: Patchy fog before 3am. Otherwise, mostly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Patchy Fog

  • Monday

    Monday: Mostly sunny, with a high near 66. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog between 7am and 8am. Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 65.

    High: 65 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Wednesday

    Wednesday: Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 71.

    High: 71 °F

    Patchy Frost
    then Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 69. Northeast wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 48. Calm wind.
Sunday
A chance of light rain, mainly between 9am and 2pm. Mostly cloudy, with a high near 61. Light and variable wind becoming southeast around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Patchy fog before 3am. Otherwise, mostly cloudy, with a low around 51. Calm wind.
Monday
Mostly sunny, with a high near 66. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Patchy fog between 7am and 8am. Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 65.
Tuesday Night
Clear, with a low around 37.
Wednesday
Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castanea PA
 41.13°N 77.42°W (Elev. 597 ft)
Last Update:
12:15 pm EDT Oct 3, 2026
Forecast Valid:
2pm EDT Oct 3, 2026-6pm EDT Oct 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation