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.

Mostly Cloudy

65°F

18°C

Humidity 52%
Wind Speed Vrbl 5 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 15 May 1:53 pm EDT
Extended Forecast for

5 Miles NNE Mechanicsville PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 66. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 59. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Mostly sunny, with a high near 82. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 66. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 46. Calm wind.
Saturday
Sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 59. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers. Mostly sunny, with a high near 82. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Showers likely. Partly sunny, with a high near 84. Chance of precipitation is 70%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Mechanicsville PA
 41.04°N 76.56°W (Elev. 1050 ft)
Last Update:
2:05 pm EDT May 15, 2026
Forecast Valid:
2pm EDT May 15, 2026-6pm EDT May 21, 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