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.

Light Rain

59°F

15°C

Humidity 87%
Wind Speed NW 5 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 26 Sep 2:53 pm EDT
Extended Forecast for

Herndon PA

  • This Afternoon

    This Afternoon: A chance of rain, mainly before 5pm. Cloudy, with a high near 66. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance Rain

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. North wind around 10 mph, with gusts as high as 26 mph.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain. High near 64. North wind 13 to 15 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Rain

  • Sunday Night

    Sunday Night: A chance of rain before 3am, then a chance of showers after 5am. Mostly cloudy, with a low around 57. North wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance Rain

  • Monday

    Monday: Mostly cloudy, with a high near 70. North wind around 6 mph.

    High: 70 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of rain, mainly before 5pm. Cloudy, with a high near 66. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy, with a low around 55. North wind around 10 mph, with gusts as high as 26 mph.
Sunday
Rain. High near 64. North wind 13 to 15 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of rain before 3am, then a chance of showers after 5am. Mostly cloudy, with a low around 57. North wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy, with a high near 70. North wind around 6 mph.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 77.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
Partly sunny, with a high near 79.
Thursday Night
Mostly cloudy, with a low around 60.
Friday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 71.
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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:
3:03 pm EDT Sep 26, 2026
Forecast Valid:
3pm EDT Sep 26, 2026-6pm EDT Oct 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation