Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

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

Fog/Mist

67°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 29.83 in (1009.8 mb)
Dewpoint 67°F (19°C)
Visibility 4.00 mi
Last update 10 Jul 2:53 am EDT
Detailed forecast for

Northumberland County

Rest Of Tonight
Mostly cloudy. Patchy fog. Near steady temperature in the upper 60s. Light and variable winds.
Friday
Mostly cloudy. Patchy fog in the morning. Showers likely with a chance of thunderstorms in the afternoon. Very warm. Humid with highs in the mid 80s. West winds around 5 mph. Chance of rain 70 percent.
Friday Night
A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Patchy fog after midnight. Humid with lows in the mid 60s. West winds around 5 mph in the evening, becoming light and variable. Chance of rain 50 percent.
Saturday
Patchy fog in the morning. Mostly cloudy in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 80s. Northeast winds around 5 mph. Chance of rain 50 percent.
Saturday Night
Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows around 60. North winds around 5 mph. Chance of rain 30 percent.
Sunday
Sunny. Highs in the mid 80s.
Sunday Night
Mostly clear. Lows in the lower 60s.
Monday
Sunny. Very warm with highs in the mid 80s.
Monday Night
Mostly clear. Lows in the mid 60s.
Tuesday
Sunny, hot with highs around 90.
Tuesday Night
Mostly clear. Humid, warm with lows around 70.
Wednesday
Sunny hot with highs in the lower 90s.
Wednesday Night
Partly cloudy. Humid with lows in the upper 60s.
Thursday
Mostly sunny. Hot with highs around 90.



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300 AM EDT Fri Jul 10 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database