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.

Overcast

44°F

7°C

Humidity 73%
Wind Speed Calm
Barometer 29.82 in (1010.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 8 Nov 6:53 pm EST
Extended Forecast for

Mechanicsville PA

  • Tonight

    Tonight: Increasing clouds, with a low around 45. West wind 7 to 9 mph.

    Low: 45 °F

    Increasing
    Clouds

  • Monday

    Monday: A slight chance of rain before 8am. Mostly cloudy, with a high near 56. Northwest wind 8 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 56 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. West wind 3 to 8 mph.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62. Southwest wind 3 to 8 mph.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. West wind 5 to 7 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain. High near 51. Chance of precipitation is 80%.

    High: 51 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 35. Chance of precipitation is 80%.

    Low: 35 °F

    Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 45. West wind 7 to 9 mph.
Monday
A slight chance of rain before 8am. Mostly cloudy, with a high near 56. Northwest wind 8 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 36. West wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 62. Southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 36. West wind 5 to 7 mph becoming calm in the evening.
Veterans Day
Mostly sunny, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 39.
Thursday
Rain. High near 51. Chance of precipitation is 80%.
Thursday Night
Rain. Low around 35. Chance of precipitation is 80%.
Friday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 41. Chance of precipitation is 60%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsville PA
 40.95°N 76.57°W (Elev. 899 ft)
Last Update:
7:05 pm EST Nov 8, 2026
Forecast Valid:
7pm EST Nov 8, 2026-6pm EST Nov 15, 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