NimbocastUpper Saint Clair, PA Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Upper Saint Clair, Allegheny County, Pennsylvania.
Updated Jul 29, 2026, 3:54 PM local time · Radar refreshes every 5 minutes
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Upper Saint Clair
75°F
Wind 12 mph
Humidity 54%
Cloud cover 22%
UV index 5
Alerts 0
Active alerts
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No active National Weather Service alerts for Upper Saint Clair, PA.
Upper Saint Clair weather radar
Light
Heavy
Next 24 hours
Now
⛅
74°F
4 PM
☀️
76°F
5 PM
🌤️
78°F
6 PM
☀️
78°F
7 PM
🌤️
77°F
8 PM
☀️
74°F
9 PM
☀️
70°F
10 PM
☀️
68°F
11 PM
☀️
66°F
12 AM
☀️
64°F
1 AM
☀️
63°F
2 AM
☀️
61°F
3 AM
☀️
60°F
4 AM
☀️
59°F
5 AM
☀️
58°F
6 AM
☀️
57°F
7 AM
☀️
57°F
8 AM
☀️
62°F
9 AM
☀️
66°F
10 AM
☀️
70°F
11 AM
☀️
73°F
12 PM
☀️
76°F
1 PM
☀️
79°F
2 PM
☀️
80°F
7-day forecast
Today
Jul 29
☁️
78°F
65°F
1%
Thu
Jul 30
☀️
82°F
57°F
Fri
Jul 31
☁️
85°F
60°F
1%
Sat
Aug 1
🌦️
88°F
65°F
34%
Sun
Aug 2
🌧️
69°F
65°F
53%
Mon
Aug 3
☁️
80°F
61°F
24%
Tue
Aug 4
🌤️
86°F
61°F
18%
Weather near Upper Saint Clair
2 mi
Mount Lebanon, PA2 mi
Bethel Park, PA6 mi
Baldwin, PA9 mi
Pittsburgh, PA12 mi
West Mifflin, PA12 mi
McKeesport, PA13 mi
Wilkinsburg, PA17 mi
Monroeville, PA
Alerts are relayed from the National Weather Service and may lag
the official source. In a life-threatening situation always follow
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broadcasts.