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

Hazardous Weather Conditions

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Partly Cloudy

29°F

-2°C

Humidity 51%
Wind Speed SW 5 mph
Barometer 30.57 in (1035.9 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 2 Mar 7:53 pm EST
Extended Forecast for

Northumberland PA

Winter Weather Advisory March 3, 07:00am until March 3, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A slight chance of snow showers between 4am and 5am, then a slight chance of freezing rain after 5am. Increasing clouds, with a low around 26. Calm wind. Chance of precipitation is 20%.

    Low: 26 °F

    Partly Cloudy
    then Slight
    Chance Wintry
    Mix

  • Tuesday

    Tuesday: A chance of snow before 7am, then snow and freezing rain between 7am and 10am, then rain after 10am. High near 38. Calm wind becoming south around 5 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Wintry Mix
    then Rain

  • Tuesday Night

    Tuesday Night: Showers, mainly before 1am. Low around 36. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Showers

  • Wednesday

    Wednesday: A slight chance of showers after 1pm. Mostly cloudy, with a high near 54. Calm wind. Chance of precipitation is 20%.

    High: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Cloudy, with a low around 43. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers. Cloudy, with a high near 58. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of snow showers between 4am and 5am, then a slight chance of freezing rain after 5am. Increasing clouds, with a low around 26. Calm wind. Chance of precipitation is 20%.
Tuesday
A chance of snow before 7am, then snow and freezing rain between 7am and 10am, then rain after 10am. High near 38. Calm wind becoming south around 5 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Tuesday Night
Showers, mainly before 1am. Low around 36. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A slight chance of showers after 1pm. Mostly cloudy, with a high near 54. Calm wind. Chance of precipitation is 20%.
Wednesday Night
Showers likely, mainly after 1am. Cloudy, with a low around 43. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A chance of showers. Cloudy, with a high near 58. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers. Low around 48. Chance of precipitation is 80%.
Friday
Mostly cloudy, with a high near 66.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
A chance of showers after 1pm. Partly sunny, with a high near 67. Chance of precipitation is 30%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Monday
Mostly cloudy, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Northumberland PA
 40.89°N 76.79°W (Elev. 482 ft)
Last Update:
7:06 pm EST Mar 2, 2026
Forecast Valid:
8pm EST Mar 2, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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