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Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82° N Lon: 76.87° W Elev: 443 ft.

Fair

22°F

-6°C

Humidity 48%
Wind Speed Calm
Barometer 30.25 in (1025.3 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 9 Feb 6:53 pm EST
Detailed forecast for

Northumberland County

Tonight
Mostly cloudy. Not as cold with lows around 15. Light and variable winds.
Tuesday
Mostly cloudy with a slight chance of snow. A slight chance of rain and freezing rain in the afternoon. Not as cool with highs in the mid 30s. South winds around 5 mph. Chance of precipitation 20 percent.
Tuesday Night
Mostly cloudy. Not as cool with lows in the upper 20s. Southwest winds around 5 mph, becoming west with gusts up to 20 mph after midnight.
Wednesday
Mostly cloudy. Highs in the mid 30s. Northwest winds 10 to 15 mph with gusts up to 30 mph.
Wednesday Night
Mostly cloudy. Lows in the lower 20s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Thursday
Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 30s.
Thursday Night
Mostly cloudy. Lows 15 to 20.
Friday
Mostly sunny. Highs in the lower 30s.
Friday Night
Mostly clear. Lows 15 to 20.
Saturday
Mostly sunny. Highs in the upper 30s.
Saturday Night
Mostly cloudy. Lows around 20.
Sunday
Mostly cloudy. A chance of snow in the morning, then rain and snow likely in the afternoon. Highs in the mid 30s. Chance of precipitation 60 percent.
Sunday Night
Rain and snow likely. Lows in the upper 20s. Chance of precipitation 70 percent.
Washingtons Birthday
Partly sunny. A chance of rain in the morning. Highs in the upper 30s. Chance of rain 40 percent.



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600 PM EST Mon Feb 9 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database