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

38°F

3°C

Humidity 97%
Wind Speed Calm
Barometer 30.07 in (1018.3 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 16 Oct 2:53 am EDT
Extended Forecast for

5 Miles NNE Mechanicsville PA

  • Overnight

    Overnight: Clear, with a low around 38. Northwest wind around 6 mph.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 59. North wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 5am. Otherwise, clear, with a low around 33. North wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Clear then
    Frost

  • Friday

    Friday: Widespread frost before 9am. Otherwise, sunny, with a high near 61. North wind around 6 mph.

    High: 61 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a low around 38. Northwest wind around 6 mph.
Thursday
Sunny, with a high near 59. North wind 7 to 13 mph, with gusts as high as 24 mph.
Thursday Night
Widespread frost, mainly after 5am. Otherwise, clear, with a low around 33. North wind 5 to 9 mph, with gusts as high as 20 mph.
Friday
Widespread frost before 9am. Otherwise, sunny, with a high near 61. North wind around 6 mph.
Friday Night
Partly cloudy, with a low around 39. Calm wind.
Saturday
Partly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 50%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Monday
A chance of showers. Partly sunny, with a high near 62. Chance of precipitation is 40%.
Monday Night
A chance of showers. Partly cloudy, with a low around 40. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Wednesday
Partly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Mechanicsville PA
 41.04°N 76.56°W (Elev. 1050 ft)
Last Update:
2:06 am EDT Oct 16, 2025
Forecast Valid:
3am EDT Oct 16, 2025-6pm EDT Oct 22, 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