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

78°F

26°C

Humidity 48%
Wind Speed NE 7 mph
Barometer 30.00 in (1015.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 11 Sep 5:53 pm EDT
Extended Forecast for

Mifflinburg PA

  • Tonight

    Tonight: Increasing clouds, with a low around 56. Calm wind.

    Low: 56 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 76. Calm wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms. Low around 66. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 66 °F

    Showers

  • Sunday

    Sunday: A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 82 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. Light northwest wind.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 56. Calm wind.
Saturday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 76. Calm wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms. Low around 66. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 59. Light northwest wind.
Monday
Mostly sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mifflinburg PA
 40.91°N 77.05°W (Elev. 699 ft)
Last Update:
2:21 pm EDT Sep 11, 2026
Forecast Valid:
6pm EDT Sep 11, 2026-6pm EDT Sep 18, 2026
 
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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