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.

Fair

63°F

17°C

Humidity 43%
Wind Speed NA
Barometer 29.91 in (1012.6 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 10 Nov 12:53 pm EST
Extended Forecast for

Mechanicsville PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 62. West wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. West wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 2am. Cloudy, with a low around 45. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers, mainly after 7am. High near 52. Light and variable wind becoming north around 6 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.

    High: 44 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 44.

    High: 44 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 62. West wind 7 to 10 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 38. West wind around 6 mph becoming calm in the evening.
Veterans Day
Partly sunny, with a high near 59. Light and variable wind.
Wednesday Night
Showers likely, mainly before 2am. Cloudy, with a low around 45. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers, mainly after 7am. High near 52. Light and variable wind becoming north around 6 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.
Friday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 44.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Mostly cloudy, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Partly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsville PA
 40.98°N 76.57°W (Elev. 961 ft)
Last Update:
1:28 pm EST Nov 10, 2026
Forecast Valid:
1pm EST Nov 10, 2026-6pm EST Nov 16, 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