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 70%
Wind Speed NW 6 mph
Barometer 30.09 in (1019.2 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 7 Dec 11:53 pm EST
Extended Forecast for

Sunbury PA

  • Overnight

    Overnight: Partly cloudy, with a low around 19. North wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 19 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 27. North wind 6 to 11 mph becoming light in the afternoon. Winds could gust as high as 20 mph.

    High: 27 °F

    Partly 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 30. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 30 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 26. South wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: Rain likely, possibly mixed with snow, becoming all rain after 1pm. Cloudy, with a high near 43. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    Likely

  • 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

  • Thursday

    Thursday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of snow showers. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 19. North wind 8 to 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 27. North wind 6 to 11 mph becoming light in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 8. Calm wind.
Tuesday
Mostly cloudy, with a high near 30. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 26. South wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
Rain likely, possibly mixed with snow, becoming all rain after 1pm. Cloudy, with a high near 43. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 37.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Friday
A chance of snow showers. Partly sunny, with a high near 33. Chance of precipitation is 30%.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 28.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Partly sunny, with a high near 27.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.84°N 76.8°W (Elev. 617 ft)
Last Update:
11:06 pm EST Dec 7, 2025
Forecast Valid:
12am EST Dec 8, 2025-6pm EST Dec 14, 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