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

Schuylkill County/Joe Zerbey Airport (KZER)

Lat: 40.71°NLon: 76.37°WElev: 1730ft.

Partly Cloudy

70°F

21°C

Humidity 94%
Wind Speed SW 5 mph
Barometer 30.07 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 17 Aug 12:55 am EDT
Extended Forecast for

Saint Clair PA

  • Overnight

    Overnight: Patchy fog before 2am. Otherwise, mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Patchy Fog

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 65. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers after 2pm. Partly sunny, with a high near 76. East wind around 6 mph. Chance of precipitation is 20%.

    High: 76 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 61. Light southeast wind. Chance of precipitation is 20%.

    Low: 61 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog before 2am. Otherwise, mostly clear, with a low around 66. Calm wind.
Sunday
A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 65. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers after 2pm. Partly sunny, with a high near 76. East wind around 6 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 61. Light southeast wind. Chance of precipitation is 20%.
Tuesday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Clair PA
 40.74°N 76.2°W (Elev. 988 ft)
Last Update:
1:27 pm EDT Aug 16, 2025
Forecast Valid:
1am EDT Aug 17, 2025-6pm EDT Aug 23, 2025
 
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