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

68°F

20°C

Humidity 49%
Wind Speed Vrbl 3 mph
Barometer 29.84 in (1010.3 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 6 Nov 1:53 pm EST
Extended Forecast for

Mechanicsville PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 69. West wind 3 to 5 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. Light west wind increasing to 5 to 9 mph after midnight.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain after 3pm. Partly sunny, with a high near 55. West wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 55 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A slight chance of rain before 3am. Mostly cloudy, with a low around 43. West wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 59. West wind around 9 mph, with gusts as high as 21 mph.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 69. West wind 3 to 5 mph.
Tonight
Mostly cloudy, with a low around 42. Light west wind increasing to 5 to 9 mph after midnight.
Saturday
A slight chance of rain after 3pm. Partly sunny, with a high near 55. West wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of rain before 3am. Mostly cloudy, with a low around 43. West wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 59. West wind around 9 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 36.
Veterans Day
Partly sunny, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 32.
Thursday
Partly sunny, with a high near 52.
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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:
1:21 pm EST Nov 6, 2026
Forecast Valid:
2pm EST Nov 6, 2026-6pm EST Nov 12, 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