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

56°F

13°C

Humidity 51%
Wind Speed N 7 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 15 Oct 7:53 pm EDT
Extended Forecast for

Sunbury PA

  • Tonight

    Tonight: Clear, with a low around 39. North wind 3 to 7 mph. Winds could gust as high as 20 mph.

    Low: 39 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 60. North wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 5am. Otherwise, clear, with a low around 35. North wind 5 to 7 mph becoming calm after midnight.

    Low: 35 °F

    Clear then
    Areas Frost

  • Friday

    Friday: Areas of frost before 9am. Otherwise, sunny, with a high near 62. North wind 3 to 6 mph.

    High: 62 °F

    Areas Frost
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 71. Chance of precipitation is 40%.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly after 8pm. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

Detailed Forecast

Tonight
Clear, with a low around 39. North wind 3 to 7 mph. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 60. North wind 6 to 13 mph, with gusts as high as 24 mph.
Thursday Night
Areas of frost after 5am. Otherwise, clear, with a low around 35. North wind 5 to 7 mph becoming calm after midnight.
Friday
Areas of frost before 9am. Otherwise, sunny, with a high near 62. North wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 38. Calm wind.
Saturday
Partly sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Sunday Night
Showers likely, mainly after 8pm. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Monday
A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 63.
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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 Oct 15, 2025
Forecast Valid:
8pm EDT Oct 15, 2025-6pm EDT Oct 22, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation