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

71°F

22°C

Humidity 81%
Wind Speed S 5 mph
Barometer 29.92 in (1012.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 14 Oct 12:53 pm EDT
Extended Forecast for

Port Trevorton PA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 78. West wind around 7 mph.

    High: 78 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. North wind 5 to 7 mph.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66. North wind around 5 mph becoming calm in the morning.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 54. Light south wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 74. South wind 9 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers

  • Friday Night

    Friday Night: Showers before 8pm. Low around 40. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 5am. Otherwise, clear, with a low around 33.

    Low: 33 °F

    Clear then
    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Frost then
    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 78. West wind around 7 mph.
Tonight
Mostly cloudy, with a low around 51. North wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 66. North wind around 5 mph becoming calm in the morning.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 54. Light south wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 74. South wind 9 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers before 8pm. Low around 40. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 52.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, clear, with a low around 33.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 35.
Monday
Patchy frost. Otherwise, mostly sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Trevorton PA
 40.7°N 76.91°W (Elev. 600 ft)
Last Update:
8:06 am EDT Oct 14, 2026
Forecast Valid:
1pm EDT Oct 14, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation