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.

Mostly Cloudy

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 30.52 in (1033.8 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 19 Oct 5:53 am EDT
Extended Forecast for

Lewisburg PA

  • Today

    Today: Patchy fog before 9am. Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 68. Calm wind.

    High: 68 °F

    Frost and
    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Clear, with a low around 37. Light north wind.

    Low: 37 °F

    Clear

  • Tuesday

    Tuesday: Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 67. North wind 5 to 9 mph.

    High: 67 °F

    Patchy Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 35. North wind around 6 mph becoming calm after midnight.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog before 9am. Patchy frost before 9am. Otherwise, sunny, with a high near 64. Calm wind.

    High: 64 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy frost before 9am. Otherwise, sunny, with a high near 66.

    High: 66 °F

    Patchy Frost
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 9am. Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 68. Calm wind.
Tonight
Clear, with a low around 37. Light north wind.
Tuesday
Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 67. North wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 35. North wind around 6 mph becoming calm after midnight.
Wednesday
Patchy fog before 9am. Patchy frost before 9am. Otherwise, sunny, with a high near 64. Calm wind.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Patchy frost before 9am. Otherwise, sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 34.
Saturday
Sunny, with a high near 61.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewisburg PA
 40.96°N 76.87°W (Elev. 499 ft)
Last Update:
5:31 am EDT Oct 19, 2026
Forecast Valid:
6am EDT Oct 19, 2026-6pm EDT Oct 25, 2026
 
Forecast Discussion
 
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