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.

Mostly Cloudy

78°F

26°C

Humidity 67%
Wind Speed S 8 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 26 May 4:53 pm EDT
Extended Forecast for

Clairton PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after midnight. Patchy fog after 4am. Otherwise, cloudy, with a low around 64. Light south wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms, mainly between 3pm and 5pm. High near 77. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Light west wind. Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 76. North wind 5 to 11 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms, mainly after midnight. Patchy fog after 4am. Otherwise, cloudy, with a low around 64. Light south wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms, mainly between 3pm and 5pm. High near 77. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Light west wind. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 76. North wind 5 to 11 mph.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 52.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clairton PA
 40.29°N 79.86°W (Elev. 1027 ft)
Last Update:
2:21 pm EDT May 26, 2026
Forecast Valid:
5pm EDT May 26, 2026-6pm EDT Jun 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation