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.

Fog/Mist

59°F

15°C

Humidity 96%
Wind Speed Calm
Barometer 29.95 in (1013.8 mb)
Dewpoint 58°F (14°C)
Visibility 3.00 mi
Last update 19 Aug 4:53 am EDT
Extended Forecast for

2 Miles SSE Mifflinburg PA

  • Today

    Today: Increasing clouds, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 83 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Showers likely, mainly between noon and 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 77 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 80. Calm wind.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers after 2am. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. Chance of precipitation is 20%.

    Low: 60 °F

    Partly Cloudy
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 63. Calm wind.
Thursday
Showers likely, mainly between noon and 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Calm wind.
Friday
Sunny, with a high near 80. Calm wind.
Friday Night
A slight chance of showers after 2am. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. Chance of precipitation is 20%.
Saturday
A chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Saturday Night
A chance of showers before 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Sunday
Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Mifflinburg PA
 40.89°N 77.02°W (Elev. 699 ft)
Last Update:
2:21 am EDT Aug 19, 2026
Forecast Valid:
5am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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