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

50°F

10°C

Humidity 68%
Wind Speed Calm
Barometer 29.96 in (1014.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 9 Mar 9:53 pm EDT
Extended Forecast for

Sunbury PA

  • Tonight

    Tonight: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 72. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 5pm. High near 74. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 40. South wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 40 °F

    Showers

  • Thursday

    Thursday: A chance of rain and snow showers before 2pm. Mostly cloudy, with a high near 47. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: A chance of rain and snow showers after 2pm. Partly sunny, with a high near 47. Chance of precipitation is 40%.

    High: 47 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow showers before 8pm, then a chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance
    Rain/Snow
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 44. Calm wind.
Tuesday
Mostly sunny, with a high near 72. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 55. Calm wind.
Wednesday
Showers, with thunderstorms also possible after 5pm. High near 74. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Low around 40. South wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of rain and snow showers before 2pm. Mostly cloudy, with a high near 47. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Mostly clear, with a low around 28.
Friday
A chance of rain and snow showers after 2pm. Partly sunny, with a high near 47. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow showers before 8pm, then a chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.
Sunday
A chance of rain and snow showers. Mostly cloudy, with a high near 58. Chance of precipitation is 30%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.
Monday
Showers likely. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
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:
8:06 pm EDT Mar 9, 2026
Forecast Valid:
10pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026
 
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