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.

A Few Clouds

82°F

28°C

Humidity 56%
Wind Speed N 9 mph
Barometer 30.06 in (1017.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 28 Aug 1:53 pm EDT
Extended Forecast for

Millersburg PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. Light north wind.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 55. Light northeast wind.

    Low: 55 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 81. Calm wind.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. Light north wind.
Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 55. Light northeast wind.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 81. Calm wind.
Saturday Night
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 61. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 67.
Monday
Partly sunny, with a high near 87.
Monday Night
Mostly cloudy, with a low around 68.
Tuesday
Partly sunny, with a high near 89.
Tuesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 89. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Millersburg PA
 40.55°N 76.97°W (Elev. 400 ft)
Last Update:
2:21 pm EDT Aug 28, 2026
Forecast Valid:
2pm EDT Aug 28, 2026-6pm EDT Sep 3, 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