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.

A Few Clouds

78°F

26°C

Humidity 60%
Wind Speed S 5 mph
Barometer 30.00 in (1015.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 26 Aug 6:53 pm EDT
Extended Forecast for

Mifflinburg PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Patchy Fog
    then Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 1am. Some of the storms could be severe. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Friday

    Friday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 80. Light northwest wind.

    High: 80 °F

    Areas Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 79.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 64. Calm wind.
Thursday
A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter 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 1am. Some of the storms could be severe. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 80. Light northwest wind.
Friday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 57. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Partly sunny, with a high near 85.
Monday Night
Mostly cloudy, with a low around 68.
Tuesday
Partly sunny, with a high near 87.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 86. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Mifflinburg PA
 40.91°N 77.05°W (Elev. 699 ft)
Last Update:
7:01 pm EDT Aug 26, 2026
Forecast Valid:
7pm EDT Aug 26, 2026-6pm EDT Sep 2, 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