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

73°F

23°C

Humidity 87%
Wind Speed Calm
Barometer 30.13 in (1020.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 15 Jul 8:53 am EDT
Extended Forecast for

3 Miles NW Lewisburg PA

  • Today

    Today: Sunny, with a high near 89. Calm wind.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 71. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 90. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 89. Calm wind.
Tonight
Partly cloudy, with a low around 70. Calm wind.
Wednesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 71. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 90. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.
Friday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Saturday
A chance of showers after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Saturday Night
A chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Lewisburg PA
 40.99°N 76.92°W (Elev. 528 ft)
Last Update:
8:10 am EDT Jul 15, 2025
Forecast Valid:
9am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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