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

42°F

6°C

Humidity 96%
Wind Speed Calm
Barometer 30.42 in (1030.3 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 2 Nov 3:53 am EST
Extended Forecast for

Sunbury PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 66. Light and variable wind.

    High: 66 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, increasing clouds, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Widespread fog, mainly after 3am. Otherwise, partly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Partly Cloudy
    then Fog

  • Wednesday

    Wednesday: Widespread fog, mainly before 8am. Otherwise, mostly sunny, with a high near 72.

    High: 72 °F

    Fog then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers. High near 71. Chance of precipitation is 80%.

    High: 71 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. Calm wind.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 66. Light and variable wind.
Monday Night
Patchy fog after 3am. Otherwise, increasing clouds, with a low around 42. Calm wind.
Tuesday
Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 68. Light and variable wind.
Tuesday Night
Widespread fog, mainly after 3am. Otherwise, partly cloudy, with a low around 47. Calm wind.
Wednesday
Widespread fog, mainly before 8am. Otherwise, mostly sunny, with a high near 72.
Wednesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Thursday
Showers. High near 71. Chance of precipitation is 80%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
Friday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.87°N 76.79°W (Elev. 482 ft)
Last Update:
3:36 am EST Nov 2, 2026
Forecast Valid:
3am EST Nov 2, 2026-6pm EST Nov 8, 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