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.

Fair

40°F

4°C

Humidity 97%
Wind Speed Calm
Barometer 30.25 in (1024.5 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 2 Nov 9:53 pm EST
Extended Forecast for

Sunbury PA

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 62. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. West wind around 7 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60. West wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. West wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers before 1am. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.

    Low: 40 °F

    Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 37. Calm wind.
Monday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 62. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 41. West wind around 7 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 60. West wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 38. West wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.
Thursday
Sunny, with a high near 55.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Mostly cloudy, with a high near 59.
Friday Night
Showers likely. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
A chance of showers. Mostly cloudy, with a high near 55. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.86°N 76.77°W (Elev. 499 ft)
Last Update:
7:46 pm EST Nov 2, 2025
Forecast Valid:
10pm EST Nov 2, 2025-6pm EST Nov 9, 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