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

62°F

17°C

Humidity 93%
Wind Speed NW 3 mph
Barometer 29.93 in (1013.4 mb)
Dewpoint 60°F (16°C)
Visibility 9.00 mi
Last update 5 Sep 9:53 pm EDT
Extended Forecast for

Lewisburg PA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, clear, with a low around 57. Light and variable wind.

    Low: 57 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 77. Northeast wind 3 to 6 mph.

    High: 77 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 52. Light north wind.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Labor Day

    Labor Day: Patchy fog before 9am. Otherwise, sunny, with a high near 76. Calm wind.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Partly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, clear, with a low around 57. Light and variable wind.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 77. Northeast wind 3 to 6 mph.
Sunday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 52. Light north wind.
Labor Day
Patchy fog before 9am. Otherwise, sunny, with a high near 76. Calm wind.
Monday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 53. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
A chance of showers before 2am. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 81.
Thursday Night
Mostly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 52.
Saturday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewisburg PA
 40.96°N 76.89°W (Elev. 499 ft)
Last Update:
9:55 pm EDT Sep 5, 2026
Forecast Valid:
10pm EDT Sep 5, 2026-6pm EDT Sep 12, 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