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

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

62°F

17°C

Humidity 60%
Wind Speed N 9 mph
Barometer 30.20 in (1023.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 21 May 3:53 pm EDT
Extended Forecast for

Clairton PA

  • This Afternoon

    This Afternoon: A slight chance of showers. Cloudy, with a high near 65. East wind around 9 mph. Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. East wind around 7 mph.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers after 3pm. Mostly cloudy, with a high near 67. East wind 9 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers, with thunderstorms also possible after 2am. Low around 50. East wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 65. Southeast wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 65 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 54. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Memorial Day

    Memorial Day: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.

    High: 75 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of showers. Cloudy, with a high near 65. East wind around 9 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 52. East wind around 7 mph.
Friday
A chance of showers after 3pm. Mostly cloudy, with a high near 67. East wind 9 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers, with thunderstorms also possible after 2am. Low around 50. East wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Showers and possibly a thunderstorm. High near 65. Southeast wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 54. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Memorial Day
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
Monday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 83. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 61.
Wednesday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Clairton PA
 40.29°N 79.89°W (Elev. 866 ft)
Last Update:
2:21 pm EDT May 21, 2026
Forecast Valid:
4pm EDT May 21, 2026-6pm EDT May 27, 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