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

60°F

16°C

Humidity 96%
Wind Speed Calm
Barometer 29.87 in (1011.3 mb)
Dewpoint 59°F (15°C)
Visibility 4.00 mi
Last update 14 Oct 12:53 am EDT
Extended Forecast for

3 Miles ENE McAlisterville PA

  • Overnight

    Overnight: Clear, with a low around 63. South wind 3 to 5 mph.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: A chance of showers, mainly before 11am. Increasing clouds, with a high near 78. Light and variable wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 78 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52. Light north wind.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Light and variable wind.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers likely, then showers and possibly a thunderstorm after 2am. Low around 55. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before 2pm, then showers likely. High near 75. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: Showers likely before 8pm. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after midnight. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Clear then
    Areas Frost

Detailed Forecast

Overnight
Clear, with a low around 63. South wind 3 to 5 mph.
Wednesday
A chance of showers, mainly before 11am. Increasing clouds, with a high near 78. Light and variable wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 52. Light north wind.
Thursday
Mostly sunny, with a high near 65. Light and variable wind.
Thursday Night
Showers likely, then showers and possibly a thunderstorm after 2am. Low around 55. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm before 2pm, then showers likely. High near 75. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely before 8pm. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 52.
Saturday Night
Areas of frost after midnight. Otherwise, mostly clear, with a low around 34.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 64.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE McAlisterville PA
 40.64°N 77.21°W (Elev. 699 ft)
Last Update:
1:00 am EDT Oct 14, 2026
Forecast Valid:
1am EDT Oct 14, 2026-6pm EDT Oct 20, 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