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

71°F

22°C

Humidity 66%
Wind Speed W 12 G 25 mph
Barometer 29.82 in (1009.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 19 Jun 10:53 pm EDT
Extended Forecast for

Mechanicsville PA

  • Tonight

    Tonight: Partly cloudy, with a low around 60. West wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 81. West wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 64. West wind 5 to 7 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 69. South wind around 5 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 93.

    High: 93 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 60. West wind 9 to 11 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 81. West wind 9 to 11 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 64. West wind 5 to 7 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 87. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 69. South wind around 5 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny and hot, with a high near 93.
Sunday Night
Mostly clear, with a low around 71.
Monday
Sunny and hot, with a high near 95.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny and hot, with a high near 95.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
A chance of showers. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
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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:
10:58 pm EDT Jun 19, 2025
Forecast Valid:
11pm EDT Jun 19, 2025-6pm EDT Jun 26, 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