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

18°C

64°F

Humidity 100%
Wind Speed Calm
Barometer 1013.3 mb (29.93 in)
Dewpoint 18°C (64°F)
Visibility 16 km
Last update 18 Aug 10:53 pm EDT
Extended Forecast for

Danville PA

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 15. Calm wind.

    Low: 15 °C

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 29. Calm wind becoming west 5 to 8 km/h in the afternoon.

    High: 29 °C

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 18. Calm wind. Chance of precipitation is 20%.

    Low: 18 °C

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 27. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    High: 27 °C

    Chance
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 14. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.

    Low: 14 °C

    Chance
    Showers then
    Patchy Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 28.

    High: 28 °C

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 16.

    Low: 16 °C

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Partly sunny, with a high near 27. Chance of precipitation is 40%.

    High: 27 °C

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday 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 17. Chance of precipitation is 70%.

    Low: 17 °C

    Showers
    Likely

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 15. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 29. Calm wind becoming west 5 to 8 km/h in the afternoon.
Wednesday Night
A slight chance of showers after 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 18. Calm wind. Chance of precipitation is 20%.
Thursday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 27. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers before 8pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 14. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 28.
Friday Night
Partly cloudy, with a low around 16.
Saturday
A chance of showers after 2pm. Partly sunny, with a high near 27. Chance of precipitation is 40%.
Saturday 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 17. Chance of precipitation is 70%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 27. Chance of precipitation is 50%.
Sunday Night
A chance of thunderstorms. Partly cloudy, with a low around 15. Chance of precipitation is 30%.
Monday
Sunny, with a high near 26.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Mostly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Danville PA
 40.96°N 76.6°W (Elev. 499 m)
Last Update:
8:11 pm EDT Aug 18, 2026
Forecast Valid:
11pm EDT Aug 18, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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