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

Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Overcast

44°F

7°C

Humidity 68%
Wind Speed NW 7 mph
Barometer 30.19 in (1022.5 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 15 Nov 8:53 am EST
Extended Forecast for

Herndon PA

  • Today

    Today: Mostly cloudy, with a high near 47. North wind 5 to 7 mph.

    High: 47 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 53. Calm wind becoming northwest around 5 mph.

    High: 53 °F

    Partly Sunny

  • Monday Night

    Monday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, sunny, with a high near 57. Calm wind.

    High: 57 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 28.

    Low: 28 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 47. North wind 5 to 7 mph.
Tonight
Mostly cloudy, with a low around 33. Calm wind.
Monday
Partly sunny, with a high near 53. Calm wind becoming northwest around 5 mph.
Monday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 26. Calm wind.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 57. Calm wind.
Tuesday Night
Clear, with a low around 28.
Wednesday
Sunny, with a high near 61.
Wednesday Night
Mostly clear, with a low around 29.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 36.
Saturday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Herndon PA
 40.72°N 76.85°W (Elev. 397 ft)
Last Update:
8:46 am EST Nov 15, 2026
Forecast Valid:
8am EST Nov 15, 2026-6pm EST Nov 21, 2026
 
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Additional Resources

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