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

36°F

2°C

Humidity 64%
Wind Speed NW 3 mph
Barometer 30.03 in (1017.4 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 6 Dec 11:53 pm EST
Extended Forecast for

Herndon PA

  • Overnight

    Overnight: Cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 38. Calm wind becoming south around 6 mph.

    High: 38 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20. Calm wind becoming northwest around 6 mph after midnight.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 28. North wind 5 to 8 mph, with gusts as high as 20 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: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Cloudy, with a high near 42. Chance of precipitation is 50%.

    High: 42 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance Rain

Detailed Forecast

Overnight
Cloudy, with a low around 22. Calm wind.
Sunday
Mostly cloudy, with a high near 38. Calm wind becoming south around 6 mph.
Sunday Night
Mostly cloudy, with a low around 20. Calm wind becoming northwest around 6 mph after midnight.
Monday
Mostly sunny, with a high near 28. North wind 5 to 8 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 8. Calm wind.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
A chance of rain. Cloudy, with a high near 42. Chance of precipitation is 50%.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Thursday
Mostly cloudy, with a high near 39.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Friday
A chance of snow. Partly sunny, with a high near 36. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Herndon PA
 40.74°N 76.85°W (Elev. 486 ft)
Last Update:
9:11 pm EST Dec 6, 2025
Forecast Valid:
12am EST Dec 7, 2025-6pm EST Dec 13, 2025
 
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