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.

Overcast

53°F

12°C

Humidity 72%
Wind Speed NA
Barometer 29.83 in (1010.3 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 14 May 4:53 pm EDT
Extended Forecast for

3 Miles SW Port Trevorton PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 69. Northwest wind 7 to 9 mph, with gusts as high as 21 mph.

    High: 69 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 2am. Mostly cloudy, with a low around 59. Light south wind. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 69. Northwest wind 7 to 9 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 48. Calm wind.
Saturday
Sunny, with a high near 78. Calm wind becoming south 5 to 9 mph in the afternoon.
Saturday Night
A chance of showers, mainly before 2am. Mostly cloudy, with a low around 59. Light south wind. Chance of precipitation is 30%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny and hot, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Port Trevorton PA
 40.68°N 76.94°W (Elev. 768 ft)
Last Update:
2:37 pm EDT May 14, 2026
Forecast Valid:
5pm EDT May 14, 2026-6pm EDT May 21, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation