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

71°F

22°C

Humidity 96%
Wind Speed Calm
Barometer 30.10 in (1019.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 6 Aug 12:53 am EDT
Extended Forecast for

4 Miles NNE Millersburg PA

  • Overnight

    Overnight: A chance of showers, mainly after 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 70 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers, then showers and thunderstorms likely after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 86. Calm wind becoming south around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Patchy Fog
    then T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    T-storms
    Likely and
    Patchy Fog
    then Patchy
    Fog

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 85. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers, mainly after 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A slight chance of showers, then showers and thunderstorms likely after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 86. Calm wind becoming south around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. 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. Patchy fog before 9am. Otherwise, partly sunny, with a high near 85. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 86.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Millersburg PA
 40.59°N 76.93°W (Elev. 709 ft)
Last Update:
1:06 am EDT Aug 6, 2026
Forecast Valid:
1am EDT Aug 6, 2026-6pm EDT Aug 12, 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