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.

Fog/Mist

57°F

14°C

Humidity 100%
Wind Speed Calm
Barometer 29.95 in (1013.8 mb)
Dewpoint 57°F (14°C)
Visibility 2.50 mi
Last update 19 Aug 5:53 am EDT
Extended Forecast for

3 Miles NW Trevorton PA

  • Today

    Today: Areas of fog between 7am and 8am. Otherwise, increasing clouds, with a high near 83. Calm wind becoming west around 6 mph in the afternoon.

    High: 83 °F

    Areas Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely, mainly between noon and 1pm. Patchy fog before 9am. Otherwise, increasing clouds, with a high near 77. Light north wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 77 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Patchy fog after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Sunny, with a high near 81. Calm wind.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Patchy Fog
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

Detailed Forecast

Today
Areas of fog between 7am and 8am. Otherwise, increasing clouds, with a high near 83. Calm wind becoming west around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 63. Calm wind.
Thursday
Showers likely, mainly between noon and 1pm. Patchy fog before 9am. Otherwise, increasing clouds, with a high near 77. Light north wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Patchy fog after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 57. Calm wind.
Friday
Sunny, with a high near 81. Calm wind.
Friday Night
Partly cloudy, with a low around 61.
Saturday
A chance of showers after 2pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 80. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 58.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Trevorton PA
 40.81°N 76.72°W (Elev. 781 ft)
Last Update:
2:21 am EDT Aug 19, 2026
Forecast Valid:
5am EDT Aug 19, 2026-6pm EDT Aug 25, 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