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

49°F

9°C

Humidity 66%
Wind Speed W 3 mph
Barometer 29.81 in (1009.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 9 Nov 4:53 am EST
Extended Forecast for

Mechanicsville PA

  • Today

    Today: A slight chance of showers between 7am and 9am. Partly sunny, with a high near 56. Northwest wind 9 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    High: 56 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Northwest wind 5 to 9 mph becoming light west after midnight.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 63. Light southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph.

    High: 63 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. West wind 5 to 7 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 61. Light west wind.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 40. Chance of precipitation is 20%.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Rain, mainly after 1pm. High near 55. Chance of precipitation is 80%.

    High: 55 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Showers. Low around 38. Chance of precipitation is 80%.

    Low: 38 °F

    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Cloudy, with a high near 47. Chance of precipitation is 70%.

    High: 47 °F

    Showers
    Likely

Detailed Forecast

Today
A slight chance of showers between 7am and 9am. Partly sunny, with a high near 56. Northwest wind 9 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 37. Northwest wind 5 to 9 mph becoming light west after midnight.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 63. Light southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 36. West wind 5 to 7 mph becoming calm in the evening.
Veterans Day
Mostly sunny, with a high near 61. Light west wind.
Wednesday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 40. Chance of precipitation is 20%.
Thursday
Rain, mainly after 1pm. High near 55. Chance of precipitation is 80%.
Thursday Night
Showers. Low around 38. Chance of precipitation is 80%.
Friday
Showers likely, mainly before 1pm. Cloudy, with a high near 47. Chance of precipitation is 70%.
Friday Night
A chance of showers before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsville PA
 40.95°N 76.57°W (Elev. 899 ft)
Last Update:
4:46 am EST Nov 9, 2026
Forecast Valid:
5am EST Nov 9, 2026-6pm EST Nov 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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