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

60°F

16°C

Humidity 72%
Wind Speed Calm
Barometer 29.99 in (1015.3 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 25 Aug 10:53 pm EDT
Extended Forecast for

5 Miles NNE Mechanicsville PA

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 51. West wind 3 to 5 mph.

    Low: 51 °F

    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers after noon. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 73. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 20%.

    High: 73 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 50. West wind 3 to 5 mph.

    Low: 50 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 74. Northwest wind 3 to 7 mph.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 71. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Mostly clear, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Chance
    Showers then
    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 51. West wind 3 to 5 mph.
Tuesday
A slight chance of showers after noon. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 73. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 50. West wind 3 to 5 mph.
Wednesday
Sunny, with a high near 74. Northwest wind 3 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 49. Calm wind.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Friday
A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 71. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Mostly clear, with a low around 47. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 52.
Labor Day
Mostly sunny, with a high near 77.
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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:
9:56 pm EDT Aug 25, 2025
Forecast Valid:
11pm EDT Aug 25, 2025-6pm EDT Sep 1, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation