National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

A Few Clouds

76°F

24°C

Humidity 47%
Wind Speed Vrbl 5 mph
Barometer 29.85 in (1010.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 23 Aug 5:53 pm EDT
Extended Forecast for

2 Miles N Mechanicsville PA

  • Tonight

    Tonight: A slight chance of showers before 7pm. Partly cloudy, with a low around 55. West wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 72. West wind 3 to 8 mph.

    High: 72 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55. Light southwest wind.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the morning.

    High: 75 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of showers before 7pm. Partly cloudy, with a low around 55. West wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 72. West wind 3 to 8 mph.
Monday Night
Mostly cloudy, with a low around 55. Light southwest wind.
Tuesday
Partly sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 56. Calm wind.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Mechanicsville PA
 41°N 76.59°W (Elev. 600 ft)
Last Update:
4:11 pm EDT Aug 23, 2026
Forecast Valid:
6pm EDT Aug 23, 2026-6pm EDT Aug 30, 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