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

35°F

2°C

Humidity 96%
Wind Speed Calm
Barometer 30.30 in (1026.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 20 Oct 12:53 am EDT
Extended Forecast for

3 Miles NE Thompsontown PA

  • Overnight

    Overnight: Clear, with a low around 40. Calm wind.

    Low: 40 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. Light and variable wind becoming north around 6 mph in the afternoon.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 39. North wind around 5 mph becoming calm after midnight.

    Low: 39 °F

    Clear

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, sunny, with a high near 64. Calm wind.

    High: 64 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 7am. Otherwise, sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 40. Calm wind.
Tuesday
Sunny, with a high near 67. Light and variable wind becoming north around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 39. North wind around 5 mph becoming calm after midnight.
Wednesday
Patchy fog before 11am. Otherwise, sunny, with a high near 64. Calm wind.
Wednesday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 36. Calm wind.
Thursday
Patchy fog before 7am. Otherwise, sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 36.
Saturday
Sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Thompsontown PA
 40.6°N 77.19°W (Elev. 833 ft)
Last Update:
1:42 am EDT Oct 20, 2026
Forecast Valid:
1am EDT Oct 20, 2026-6pm EDT Oct 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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