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

81°F

27°C

Humidity 39%
Wind Speed NW 10 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 21 Jun 2:53 pm EDT
Extended Forecast for

Montandon PA

  • Tonight

    Tonight: Increasing clouds, with a low around 59. Northwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Increasing
    Clouds

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 74. Calm wind becoming south around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Showers

  • Monday Night

    Monday Night: Showers and thunderstorms before 2am, then a chance of showers. Patchy fog between 10pm and 3am. Low around 60. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. North wind around 9 mph, with gusts as high as 20 mph.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. North wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. Northwest wind around 5 mph becoming calm in the evening.
Monday
Showers and possibly a thunderstorm. High near 74. Calm wind becoming south around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and thunderstorms before 2am, then a chance of showers. Patchy fog between 10pm and 3am. Low around 60. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Mostly sunny, with a high near 79. North wind around 9 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 55. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 40%.
Thursday Night
A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Montandon PA
 40.96°N 76.87°W (Elev. 499 ft)
Last Update:
2:20 pm EDT Jun 21, 2026
Forecast Valid:
3pm EDT Jun 21, 2026-6pm EDT Jun 28, 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