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

49°F

9°C

Humidity 55%
Wind Speed W 13 mph
Barometer 29.92 in (1013.8 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 8 Nov 11:53 pm EST
Extended Forecast for

Upper St. Clair PA

  • Overnight

    Overnight: Mostly clear, with a low around 40. West wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 57. Northwest wind 10 to 16 mph.

    High: 57 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 63. West wind 10 to 15 mph.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 37. West wind 5 to 7 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 62.

    High: 62 °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 51. Chance of precipitation is 80%.

    High: 51 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 33. Chance of precipitation is 70%.

    Low: 33 °F

    Rain Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 40. West wind 11 to 13 mph, with gusts as high as 23 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 57. Northwest wind 10 to 16 mph.
Monday Night
Partly cloudy, with a low around 36. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Sunny, with a high near 63. West wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around 37. West wind 5 to 7 mph becoming calm in the evening.
Veterans Day
Partly sunny, with a high near 62.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.
Thursday
Rain. High near 51. Chance of precipitation is 80%.
Thursday Night
Rain likely. Cloudy, with a low around 33. Chance of precipitation is 70%.
Friday
Rain likely before 10am, then rain and snow likely. Mostly cloudy, with a high near 42. 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 43.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upper St. Clair PA
 40.33°N 80.11°W (Elev. 899 ft)
Last Update:
11:06 pm EST Nov 8, 2026
Forecast Valid:
12am EST Nov 9, 2026-6pm EST Nov 15, 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