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

50°F

10°C

Humidity 48%
Wind Speed SW 12 mph
Barometer 29.91 in (1013.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 8 Nov 8:53 pm EST
Extended Forecast for

Upper St. Clair PA

  • Tonight

    Tonight: Increasing clouds, with a low around 40. West wind 11 to 15 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 56. Northwest wind 10 to 16 mph.

    High: 56 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. Light and variable wind becoming southwest 5 to 8 mph after midnight.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 62. West wind 10 to 16 mph.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 37. West wind 3 to 7 mph.

    Low: 37 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.

    Low: 41 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain. High near 50. Chance of precipitation is 80%.

    High: 50 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 34. Chance of precipitation is 70%.

    Low: 34 °F

    Rain Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 40. West wind 11 to 15 mph.
Monday
Partly sunny, with a high near 56. Northwest wind 10 to 16 mph.
Monday Night
Partly cloudy, with a low around 36. Light and variable wind becoming southwest 5 to 8 mph after midnight.
Tuesday
Sunny, with a high near 62. West wind 10 to 16 mph.
Tuesday Night
Mostly clear, with a low around 37. West wind 3 to 7 mph.
Veterans Day
Partly sunny, with a high near 61.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.
Thursday
Rain. High near 50. Chance of precipitation is 80%.
Thursday Night
Rain likely. Cloudy, with a low around 34. Chance of precipitation is 70%.
Friday
Rain likely before 10am, then rain and snow likely. Mostly cloudy, with a high near 41. Chance of precipitation is 60%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upper St. Clair PA
 40.31°N 80.09°W (Elev. 1099 ft)
Last Update:
8:36 pm EST Nov 8, 2026
Forecast Valid:
9pm EST Nov 8, 2026-6pm EST Nov 15, 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