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.

Fog/Mist

43°F

6°C

Humidity 97%
Wind Speed N 3 mph
Barometer 29.84 in (1010.6 mb)
Dewpoint 42°F (6°C)
Visibility 5.00 mi
Last update 8 Nov 11:53 pm EST
Extended Forecast for

Mechanicsville PA

  • Overnight

    Overnight: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 45. East wind 3 to 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 4pm, then a chance of showers. High near 60. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, mainly between 9pm and 4am. Mostly cloudy, with a low around 37. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of rain showers before 1pm, then a slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 43. Northwest wind 7 to 9 mph. Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Monday Night

    Monday Night: A slight chance of snow showers. Mostly cloudy, with a low around 25. West wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Snow Showers

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 45. East wind 3 to 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers and possibly a thunderstorm before 4pm, then a chance of showers. High near 60. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers, mainly between 9pm and 4am. Mostly cloudy, with a low around 37. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A slight chance of rain showers before 1pm, then a slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 43. Northwest wind 7 to 9 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of snow showers. Mostly cloudy, with a low around 25. West wind 8 to 10 mph. Chance of precipitation is 20%.
Veterans Day
Partly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
Partly sunny, with a high near 49.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsville PA
 40.98°N 76.57°W (Elev. 961 ft)
Last Update:
12:16 am EST Nov 9, 2025
Forecast Valid:
12am EST Nov 9, 2025-6pm EST Nov 15, 2025
 
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