National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Fair

61°F

16°C

Humidity 41%
Wind Speed Vrbl 5 mph
Barometer 30.10 in (1019.4 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 6 Oct 4:53 pm EDT
Extended Forecast for

Sunbury PA

Frost Advisory October 6, 11:00pm until October 7, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Wednesday

    Wednesday: Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 71. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 71 °F

    Patchy Frost
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. Light south wind.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 37. Calm wind.
Wednesday
Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 71. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 49. Light south wind.
Thursday
Sunny, with a high near 74. Calm wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 45. Calm wind.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 40%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Columbus Day
Showers likely. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.87°N 76.79°W (Elev. 482 ft)
Last Update:
2:21 pm EDT Oct 6, 2026
Forecast Valid:
5pm EDT Oct 6, 2026-6pm EDT Oct 13, 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