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

58°F

14°C

Humidity 100%
Wind Speed Calm
Barometer 29.91 in (1012.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Oct 7:53 pm EDT
Extended Forecast for

Millersburg PA

  • Tonight

    Tonight: Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 80 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. South wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 80. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 54. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 63. South wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 80. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Friday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Areas of frost. Otherwise, mostly clear, with a low around 33.
Sunday
Areas of frost. Otherwise, sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Millersburg PA
 40.55°N 76.97°W (Elev. 400 ft)
Last Update:
8:05 pm EDT Oct 12, 2026
Forecast Valid:
8pm EDT Oct 12, 2026-6pm EDT Oct 19, 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