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

62°F

17°C

Humidity 96%
Wind Speed Calm
Barometer 29.88 in (1011.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 13 Oct 10:53 pm EDT
Extended Forecast for

Mifflinburg PA

  • Tonight

    Tonight: Mostly clear, with a low around 64. Southwest wind 3 to 5 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers before noon. Increasing clouds, with a high near 78. Light and variable wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. North wind 3 to 5 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66. Light and variable wind.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers. Low around 56. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Showers
    Likely then
    Showers

  • Friday

    Friday: Showers, mainly before 2pm. High near 71. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 71 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Partly cloudy, with a low around 39. Chance of precipitation is 30%.

    Low: 39 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 50. Breezy.

    High: 50 °F

    Sunny and
    Breezy

  • Saturday Night

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

    Low: 33 °F

    Frost

Detailed Forecast

Tonight
Mostly clear, with a low around 64. Southwest wind 3 to 5 mph.
Wednesday
A slight chance of showers before noon. Increasing clouds, with a high near 78. Light and variable wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 52. North wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 66. Light and variable wind.
Thursday Night
Showers. Low around 56. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers, mainly before 2pm. High near 71. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of showers before 8pm. Partly cloudy, with a low around 39. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 50. Breezy.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 33.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 37.
Monday
Areas of frost. Otherwise, mostly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 64.
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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:
10:26 pm EDT Oct 13, 2026
Forecast Valid:
11pm EDT Oct 13, 2026-6pm EDT Oct 20, 2026
 
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