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.

Fair

67°F

19°C

Humidity 76%
Wind Speed Calm
Barometer 29.73 in (1006.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Jun 8:53 pm EDT
Extended Forecast for

Shamokin Dam PA

  • Tonight

    Tonight: A slight chance of showers before 2am, then a chance of showers after 5am. Mostly cloudy, with a low around 65. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before noon. Cloudy, then gradually becoming mostly sunny, with a high near 86. West wind 13 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. West wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 26 mph.

    Low: 61 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 79. West wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. West wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of showers before 2am, then a chance of showers after 5am. Mostly cloudy, with a low around 65. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers and thunderstorms likely, mainly before noon. Cloudy, then gradually becoming mostly sunny, with a high near 86. West wind 13 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 61. West wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 26 mph.
Juneteenth
Sunny, with a high near 79. West wind 6 to 13 mph, with gusts as high as 24 mph.
Friday Night
Mostly clear, with a low around 58. West wind 5 to 8 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Monday
Showers. High near 76. Chance of precipitation is 80%.
Monday Night
Showers likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Shamokin Dam PA
 40.87°N 76.82°W (Elev. 600 ft)
Last Update:
8:11 pm EDT Jun 17, 2026
Forecast Valid:
8pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation