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

67°F

19°C

Humidity 41%
Wind Speed S 5 mph
Barometer 29.93 in (1013.6 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 18 Oct 5:53 pm EDT
Extended Forecast for

Lewisburg PA

  • Tonight

    Tonight: Mostly clear, with a low around 46. South wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 76. Light southeast wind becoming south 13 to 18 mph in the morning. Winds could gust as high as 32 mph.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers. Low around 51. South wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 51 °F

    Showers

  • Monday

    Monday: A chance of showers, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 62. West wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. West wind 3 to 7 mph.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 46. South wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 76. Light southeast wind becoming south 13 to 18 mph in the morning. Winds could gust as high as 32 mph.
Sunday Night
Showers. Low around 51. South wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
A chance of showers, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 62. West wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Mostly clear, with a low around 40. West wind 3 to 7 mph.
Tuesday
Sunny, with a high near 66.
Tuesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 59.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
A chance of showers. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewisburg PA
 40.96°N 76.89°W (Elev. 499 ft)
Last Update:
2:46 pm EDT Oct 18, 2025
Forecast Valid:
6pm EDT Oct 18, 2025-6pm EDT Oct 25, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation