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.

Partly Cloudy

58°F

14°C

Humidity 81%
Wind Speed N 8 mph
Barometer 30.11 in (1019.5 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 21 Sep 8:53 am EDT
Extended Forecast for

Shamokin Dam PA

  • Today

    Today: Mostly cloudy, with a high near 69. Northeast wind around 6 mph.

    High: 69 °F

    Mostly Cloudy

  • Tonight

    Tonight: Showers. Low around 52. Light northeast wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before 3pm. Cloudy, with a high near 61. East wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 48. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 64. East wind around 7 mph.

    High: 64 °F

    Mostly Cloudy

  • Wednesday Night

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

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 69. Northeast wind around 6 mph.
Tonight
Showers. Low around 52. Light northeast wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers likely, mainly before 3pm. Cloudy, with a high near 61. East wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 48. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 64. East wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Shamokin Dam PA
 40.85°N 76.83°W (Elev. 499 ft)
Last Update:
8:06 am EDT Sep 21, 2026
Forecast Valid:
9am EDT Sep 21, 2026-6pm EDT Sep 27, 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