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.

Mostly Cloudy

49°F

9°C

Humidity 41%
Wind Speed W 9 G 28 mph
Barometer 29.98 in (1015.4 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 13 Nov 1:53 pm EST
Extended Forecast for

Northumberland PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 52. Northwest wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 52 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 33. West wind around 6 mph becoming calm after midnight.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 52. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 52 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain after 1pm. Mostly cloudy, with a high near 55. Light and variable wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 1am. Low around 45. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Rain

  • Sunday

    Sunday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 52. Northwest wind 10 to 14 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 33. West wind around 6 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 52. Calm wind becoming northwest 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 30. Calm wind.
Saturday
A chance of rain after 1pm. Mostly cloudy, with a high near 55. Light and variable wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain, mainly before 1am. Low around 45. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Partly sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 47.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Northumberland PA
 40.89°N 76.79°W (Elev. 482 ft)
Last Update:
1:05 pm EST Nov 13, 2025
Forecast Valid:
2pm EST Nov 13, 2025-6pm EST Nov 19, 2025
 
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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