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.

Overcast

35°F

2°C

Humidity 64%
Wind Speed NW 5 mph
Barometer 30.06 in (1018.4 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 7 Dec 2:53 am EST
Extended Forecast for

Herndon PA

  • Overnight

    Overnight: Cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 39. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 39 °F

    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 20. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 23 mph.

    Low: 20 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 28. North wind 6 to 10 mph, with gusts as high as 23 mph.

    High: 28 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8. Calm wind.

    Low: 8 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 31.

    High: 31 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Cloudy, with a low around 24.

    Low: 24 °F

    Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly before 1pm. Cloudy, with a high near 44. Chance of precipitation is 60%.

    High: 44 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 29. Calm wind.
Sunday
Cloudy, with a high near 39. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 20. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 23 mph.
Monday
Mostly sunny, with a high near 28. North wind 6 to 10 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 8. Calm wind.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
Cloudy, with a low around 24.
Wednesday
Rain likely, mainly before 1pm. Cloudy, with a high near 44. Chance of precipitation is 60%.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 39.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Friday
A chance of snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Herndon PA
 40.72°N 76.85°W (Elev. 397 ft)
Last Update:
1:11 am EST Dec 7, 2025
Forecast Valid:
2am EST Dec 7, 2025-6pm EST Dec 13, 2025
 
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