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

71°F

22°C

Humidity 32%
Wind Speed SW 12 G 18 mph
Barometer 29.93 in (1013.6 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 9 Mar 4:53 pm EDT
Extended Forecast for

Shamokin Dam PA

  • Tonight

    Tonight: Mostly clear, with a low around 43. Southwest wind around 6 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 5pm. Patchy fog before 7am. High near 73. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Chance
    Showers and
    Patchy Fog
    then Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 40. South wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 40 °F

    Showers

  • Thursday

    Thursday: A chance of rain and snow showers before 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: A chance of rain and snow showers after 2pm. Partly sunny, with a high near 46. Chance of precipitation is 40%.

    High: 46 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow showers before 8pm, then a chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance
    Rain/Snow
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 43. Southwest wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 54. Calm wind.
Wednesday
Showers, with thunderstorms also possible after 5pm. Patchy fog before 7am. High near 73. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Low around 40. South wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of rain and snow showers before 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Mostly clear, with a low around 28.
Friday
A chance of rain and snow showers after 2pm. Partly sunny, with a high near 46. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow showers before 8pm, then a chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.
Sunday
A chance of rain and snow showers. Mostly cloudy, with a high near 57. Chance of precipitation is 30%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Monday
Showers likely. Mostly cloudy, with a high near 45. Chance of precipitation is 60%.
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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:
2:26 pm EDT Mar 9, 2026
Forecast Valid:
5pm EDT Mar 9, 2026-6pm EDT Mar 16, 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