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.

Fair

74°F

23°C

Humidity 52%
Wind Speed S 8 mph
Barometer 30.01 in (1016.2 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 4 Nov 2:53 pm EST
Extended Forecast for

Mechanicsville PA

  • Tonight

    Tonight: Showers, mainly after 4am. Low around 60. Southeast wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Mostly Cloudy
    then Showers

  • Thursday

    Thursday: Showers before 2pm, then a slight chance of showers after 4pm. High near 71. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 71 °F

    Showers then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 50. Light southwest wind.

    Low: 50 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers. Mostly cloudy, with a low around 44. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 55. Chance of precipitation is 30%.

    High: 55 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers, mainly after 4am. Low around 60. Southeast wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers before 2pm, then a slight chance of showers after 4pm. High near 71. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 50. Light southwest wind.
Friday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 65. Calm wind.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 44. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 20%.
Saturday
A chance of showers. Partly sunny, with a high near 55. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 35.
Veterans Day
Mostly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsville PA
 40.98°N 76.6°W (Elev. 968 ft)
Last Update:
1:20 pm EST Nov 4, 2026
Forecast Valid:
3pm EST Nov 4, 2026-6pm EST Nov 11, 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