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

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Overcast

25°F

-4°C

Humidity 63%
Wind Speed SE 3 mph
Barometer 30.07 in (1019.0 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 5 Dec 4:53 pm EST
Extended Forecast for

3 Miles NNE Northumberland PA

  • Tonight

    Tonight: Cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 38. Calm wind becoming southwest around 5 mph.

    High: 38 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 24. Calm wind.

    Low: 24 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 37. Light south wind.

    High: 37 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A slight chance of snow showers before 1am. Mostly cloudy, with a low around 20. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 20%.

    Low: 20 °F

    Slight Chance
    Snow Showers

  • Monday

    Monday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 22. Calm wind.
Saturday
Mostly cloudy, with a high near 38. Calm wind becoming southwest around 5 mph.
Saturday Night
Increasing clouds, with a low around 24. Calm wind.
Sunday
Mostly cloudy, with a high near 37. Light south wind.
Sunday Night
A slight chance of snow showers before 1am. Mostly cloudy, with a low around 20. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 28.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Partly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A chance of rain and snow showers before 1pm, then a chance of rain showers. Cloudy, with a high near 40. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Thursday
A chance of rain and snow showers. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Northumberland PA
 40.93°N 76.75°W (Elev. 594 ft)
Last Update:
4:43 pm EST Dec 5, 2025
Forecast Valid:
5pm EST Dec 5, 2025-6pm EST Dec 12, 2025
 
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