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.

Fair

71°F

22°C

Humidity 71%
Wind Speed Calm
Barometer 30.06 in (1017.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 20 Jun 11:53 pm EDT
Extended Forecast for

2 Miles N Mechanicsville PA

Extreme Heat Watch June 22, 11:00am until June 25, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70. Light south wind.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Heat index values as high as 105. West wind 3 to 8 mph.

    High: 95 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. Light west wind.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 70. Light south wind.
Sunday
Sunny and hot, with a high near 95. Heat index values as high as 105. West wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 73. Light west wind.
Monday
Sunny and hot, with a high near 97.
Monday Night
Clear, with a low around 72.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
A chance of showers after 2pm. Mostly sunny and hot, with a high near 94. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Friday
Showers likely. Partly sunny, with a high near 88. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Mechanicsville PA
 41°N 76.59°W (Elev. 600 ft)
Last Update:
10:54 pm EDT Jun 20, 2025
Forecast Valid:
12am EDT Jun 21, 2025-6pm EDT Jun 27, 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