National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Fair

86°F

30°C

Humidity 70%
Wind Speed Vrbl 3 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 1 Sep 12:53 pm EDT
Extended Forecast for

Millersburg PA

  • This Afternoon

    This Afternoon: A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. West wind around 6 mph. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before midnight. Some of the storms could be severe. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Some of the storms could be severe. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 83. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could be severe. Mostly cloudy, with a low around 70. South wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Severe
    Thunderstorms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog between 7am and 8am. Otherwise, mostly cloudy, with a high near 87. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. West wind around 6 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, mainly before midnight. Some of the storms could be severe. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms. Some of the storms could be severe. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 83. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could be severe. Mostly cloudy, with a low around 70. South wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog between 7am and 8am. Otherwise, mostly cloudy, with a high near 87. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 58.
Labor Day
A chance of showers. Mostly sunny, with a high near 79. 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:
12:23 pm EDT Sep 1, 2026
Forecast Valid:
1pm EDT Sep 1, 2026-6pm EDT Sep 7, 2026
 
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Additional Resources

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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