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 78%
Wind Speed W 9 mph
Barometer 29.95 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 14 Oct 2:55 pm EDT
Extended Forecast for

Saint Clair PA

  • This Afternoon

    This Afternoon: A slight chance of showers. Mostly cloudy, with a high near 79. Northwest wind around 6 mph. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Northeast wind around 6 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 65. Calm wind.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 54. Calm wind becoming southeast 5 to 7 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Mostly Cloudy
    then Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 2pm. High near 76. South wind 5 to 7 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 42. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 3am. Otherwise, clear, with a low around 32.

    Low: 32 °F

    Frost

  • Sunday

    Sunday: Widespread frost before 9am. Otherwise, sunny, with a high near 56.

    High: 56 °F

    Frost then
    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers. Mostly cloudy, with a high near 79. Northwest wind around 6 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 49. Northeast wind around 6 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 65. Calm wind.
Thursday Night
Showers, mainly after 2am. Low around 54. Calm wind becoming southeast 5 to 7 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, with thunderstorms also possible after 2pm. High near 76. South wind 5 to 7 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 42. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Widespread frost, mainly after 3am. Otherwise, clear, with a low around 32.
Sunday
Widespread frost before 9am. Otherwise, sunny, with a high near 56.
Sunday Night
Clear, with a low around 35.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Clair PA
 40.71°N 76.18°W (Elev. 699 ft)
Last Update:
2:21 pm EDT Oct 14, 2026
Forecast Valid:
3pm EDT Oct 14, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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