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

68°F

20°C

Humidity 81%
Wind Speed Vrbl 3 mph
Barometer 30.17 in (1021.3 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 18 Aug 9:53 pm EDT
Extended Forecast for

3 Miles SE Sunbury PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 76. Calm wind becoming southeast around 6 mph in the morning.

    High: 76 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 61. Light southeast wind. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. Calm wind.
Tuesday
Mostly cloudy, with a high near 76. Calm wind becoming southeast around 6 mph in the morning.
Tuesday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 61. Light southeast wind. Chance of precipitation is 30%.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Sunday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Sunbury PA
 40.84°N 76.74°W (Elev. 600 ft)
Last Update:
8:54 pm EDT Aug 18, 2025
Forecast Valid:
10pm EDT Aug 18, 2025-6pm EDT Aug 25, 2025
 
Forecast Discussion
 
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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