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.

Overcast

28°F

-2°C

Humidity 63%
Wind Speed Vrbl 3 G 22 mph
Barometer 29.64 in (1004.2 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 29 Dec 9:53 pm EST
Extended Forecast for

5 Miles NNE Mechanicsville PA

Wind Advisory until December 30, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until December 30, 12:00pm

    NOW until 12:00pm Tue

    Wind Advisory

  • Tonight

    Low: 23 °F

    Breezy.
    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 28. Breezy, with a west wind 17 to 24 mph, with gusts as high as 44 mph.

    High: 28 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. West wind 11 to 15 mph, with gusts as high as 28 mph.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow showers after 1pm. Mostly cloudy, with a high near 30. Southwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 17. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 17 °F

    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

Detailed Forecast

Tonight
A slight chance of snow showers before 11pm. Mostly cloudy, with a low around 23. Breezy, with a west wind 23 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, with a high near 28. Breezy, with a west wind 17 to 24 mph, with gusts as high as 44 mph.
Tuesday Night
Mostly cloudy, with a low around 22. West wind 11 to 15 mph, with gusts as high as 28 mph.
Wednesday
A slight chance of snow showers after 1pm. Mostly cloudy, with a high near 30. Southwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 17. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
New Year's Day
Partly sunny, with a high near 24.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Partly sunny, with a high near 29.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Partly sunny, with a high near 32.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Mostly cloudy, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Mechanicsville PA
 41.04°N 76.56°W (Elev. 1050 ft)
Last Update:
7:06 pm EST Dec 29, 2025
Forecast Valid:
10pm EST Dec 29, 2025-6pm EST Jan 5, 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