National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Overcast

69°F

21°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1015.6 mb)
Dewpoint 67°F (19°C)
Visibility 9.00 mi
Last update 20 Aug 8:53 am EDT
Extended Forecast for

4 Miles N Liverpool PA

Flood Watch until August 20, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until August 20, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • Today

    High: 71 °F

    Heavy Rain

  • Tonight

    Tonight: A chance of showers before 7pm. Patchy fog. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 58. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 58 °F

    Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind.

    High: 78 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 62. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 78. Calm wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers
    Likely and
    Areas Fog

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 62. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly sunny, with a high near 78. Chance of precipitation is 30%.

    High: 78 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Mostly clear, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers then
    Mostly Clear

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. Some of the storms could produce heavy rainfall. High near 71. Light northeast wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
A chance of showers before 7pm. Patchy fog. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 58. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 62. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 78. Calm wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 62. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers after 2pm. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Sunday Night
A chance of showers before 8pm. Mostly clear, with a low around 57. Chance of precipitation is 30%.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Liverpool PA
 40.64°N 77.01°W (Elev. 499 ft)
Last Update:
8:31 am EDT Aug 20, 2026
Forecast Valid:
9am EDT Aug 20, 2026-6pm EDT Aug 26, 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