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.

Overcast

45°F

7°C

Humidity 71%
Wind Speed W 13 G 25 mph
Barometer 30.04 in (1018.4 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 7 Nov 4:53 pm EST
Extended Forecast for

Upper St. Clair PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. West wind 7 to 11 mph.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 57. Southwest wind 8 to 17 mph, with gusts as high as 28 mph.

    High: 57 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 42. West wind 13 to 15 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 56. West wind 11 to 16 mph.

    High: 56 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. Southwest wind 5 to 9 mph.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.

    Low: 41 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. West wind 7 to 11 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 57. Southwest wind 8 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Increasing clouds, with a low around 42. West wind 13 to 15 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 56. West wind 11 to 16 mph.
Monday Night
Partly cloudy, with a low around 37. Southwest wind 5 to 9 mph.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 40.
Veterans Day
Partly sunny, with a high near 60.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.
Thursday
A chance of rain. Mostly cloudy, with a high near 54. Chance of precipitation is 50%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Friday
A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upper St. Clair PA
 40.35°N 80.05°W (Elev. 1188 ft)
Last Update:
5:06 pm EST Nov 7, 2026
Forecast Valid:
5pm EST Nov 7, 2026-6pm EST Nov 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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