


Hazardous Weather Conditions
Current conditions at
Pittsburgh - Allegheny County Airport (KAGC)
Lat: 40.36°NLon: 79.92°WElev: 1237ft.
A Few Clouds
83°F
28°C
Humidity | 59% |
Wind Speed | W 6 mph |
Barometer | 30.00 in (1015.4 mb) |
Dewpoint | 67°F (19°C) |
Visibility | 10.00 mi |
Heat Index | 86°F (30°C) |
Last update | 19 Jul 3:53 pm EDT |
Extended Forecast for
Upper St. Clair PA
This Afternoon
High: 87 °F
Sunny
Tonight
Low: 71 °F
Partly Cloudy
then Showers
LikelySunday
High: 84 °F
Chance
T-storms then
T-storms
LikelySunday Night
Low: 64 °F
T-storms
Likely then
Chance
ShowersMonday
High: 82 °F
Mostly Sunny
Monday Night
Low: 58 °F
Mostly Clear
Tuesday
High: 82 °F
Sunny
Tuesday Night
Low: 62 °F
Mostly Clear
Wednesday
High: 88 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 87. West wind around 7 mph.
Tonight
A chance of showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 71. Southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Mostly cloudy, with a high near 84. West wind 9 to 11 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. Northwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 82. North wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny and hot, with a high near 92.
Thursday Night
Partly cloudy, with a low around 73.
Friday
A chance of showers and thunderstorms. Partly sunny and hot, with a high near 91. Chance of precipitation is 50%.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Upper St. Clair PA
40.33°N 80.06°W (Elev. 1099 ft)
40.33°N 80.06°W (Elev. 1099 ft)
4:03 pm EDT Jul 19, 2025
4pm EDT Jul 19, 2025-6pm EDT Jul 25, 2025