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

66°F

19°C

Humidity 56%
Wind Speed NE 6 mph
Barometer 30.28 in (1025.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 3 Oct 12:53 pm EDT
Extended Forecast for

Sunbury PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 69. Light northeast wind.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 51. Calm wind.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of light rain, mainly between 9am and 5pm. Cloudy, with a high near 61. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Chance Light
    Rain

  • Sunday Night

    Sunday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Patchy Fog

  • Monday

    Monday: Mostly sunny, with a high near 66. Light northwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 21 mph.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog between 7am and 8am. Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 63.

    High: 63 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Wednesday

    Wednesday: Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 68.

    High: 68 °F

    Patchy Frost
    then Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 69. Light northeast wind.
Tonight
Increasing clouds, with a low around 51. Calm wind.
Sunday
A chance of light rain, mainly between 9am and 5pm. Cloudy, with a high near 61. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Monday
Mostly sunny, with a high near 66. Light northwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Patchy fog between 7am and 8am. Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 63.
Tuesday Night
Clear, with a low around 37.
Wednesday
Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 48.
Friday
Mostly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.84°N 76.8°W (Elev. 617 ft)
Last Update:
12:15 pm EDT Oct 3, 2026
Forecast Valid:
1pm EDT Oct 3, 2026-6pm EDT Oct 9, 2026
 
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