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.

Fog/Mist

60°F

16°C

Humidity 96%
Wind Speed Calm
Barometer 29.87 in (1011.3 mb)
Dewpoint 59°F (15°C)
Visibility 4.00 mi
Last update 14 Oct 12:53 am EDT
Extended Forecast for

Shamokin Dam PA

  • Overnight

    Overnight: Clear, with a low around 63. Light southwest wind.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: A chance of showers, mainly before 11am. Increasing clouds, with a high near 79. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 79 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51. North wind around 6 mph.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67. Light and variable wind.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 55. Calm wind becoming south 5 to 9 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: Showers before 8pm. Low around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 5am. Otherwise, clear, with a low around 33.

    Low: 33 °F

    Clear then
    Frost

Detailed Forecast

Overnight
Clear, with a low around 63. Light southwest wind.
Wednesday
A chance of showers, mainly before 11am. Increasing clouds, with a high near 79. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 51. North wind around 6 mph.
Thursday
Mostly sunny, with a high near 67. Light and variable wind.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 55. Calm wind becoming south 5 to 9 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers before 8pm. Low around 40. Chance of precipitation is 80%.
Saturday
Sunny, with a high near 53.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, clear, with a low around 33.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 35.
Monday
Patchy frost. Otherwise, mostly sunny, with a high near 64.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 67.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shamokin Dam PA
 40.85°N 76.83°W (Elev. 499 ft)
Last Update:
1:00 am EDT Oct 14, 2026
Forecast Valid:
1am EDT Oct 14, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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