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Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Light Rain Fog/Mist

47°F

8°C

Humidity 100%
Wind Speed S 8 mph
Barometer 29.78 in (1009.5 mb)
Dewpoint 47°F (8°C)
Visibility 1.00 mi
Wind Chill43°F (6°C)
Last update 10 Jan 4:53 pm EST
Extended Forecast for

Upper St. Clair PA

  • This Afternoon

    This Afternoon: Rain. High near 52. South wind around 8 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 9pm. Low around 31. West wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 31 °F

    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Snow likely, mainly before 5pm. Mostly cloudy, with a high near 35. Breezy, with a west wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Snow Likely
    and Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 26. West wind 10 to 17 mph, with gusts as high as 31 mph.

    Low: 26 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 38. Southwest wind 10 to 17 mph.

    High: 38 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain likely. Cloudy, with a high near 43. Chance of precipitation is 70%.

    High: 43 °F

    Rain Likely

Detailed Forecast

This Afternoon
Rain. High near 52. South wind around 8 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly before 9pm. Low around 31. West wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Snow likely, mainly before 5pm. Mostly cloudy, with a high near 35. Breezy, with a west wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 26. West wind 10 to 17 mph, with gusts as high as 31 mph.
Monday
Mostly sunny, with a high near 38. Southwest wind 10 to 17 mph.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Wednesday
Rain likely. Cloudy, with a high near 43. Chance of precipitation is 70%.
Wednesday Night
A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
Thursday
A chance of snow. Partly sunny, with a high near 27. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
A chance of snow. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 24. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Upper St. Clair PA
 40.33°N 80.06°W (Elev. 1099 ft)
Last Update:
12:43 pm EST Jan 10, 2026
Forecast Valid:
5pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation