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

83°F

28°C

Humidity 53%
Wind Speed NW 3 mph
Barometer 29.90 in (1012.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 3 Jul 11:53 am EDT
Extended Forecast for

Herndon PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 86. West wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 59. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms then
    Patchy Fog

  • Independence Day

    Independence Day: Patchy fog before 9am. Otherwise, sunny, with a high near 84. Light north wind.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. Light and variable wind.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 30%.

    High: 92 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 86. West wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 59. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Independence Day
Patchy fog before 9am. Otherwise, sunny, with a high near 84. Light north wind.
Friday Night
Mostly clear, with a low around 59. Calm wind.
Saturday
Sunny, with a high near 88. Light and variable wind.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 68.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Herndon PA
 40.72°N 76.85°W (Elev. 397 ft)
Last Update:
6:27 am EDT Jul 3, 2025
Forecast Valid:
12pm EDT Jul 3, 2025-6pm EDT Jul 9, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation