S
M
T
W
T
F
S
26
86°
68°
27
87°
69°
28
85°
68°
29
82°
67°
30
78°
67°
31
79°
65°
1
78°
66°
2
77°
65°
3
78°
65°
4
79°
66°
5
79°
63°
6
78°
61°
7
78°
61°
8
79°
62°
9
79°
67°
10
78°
66°
11
80°
64°
12
81°
64°
13
81°
66°
14
82°
66°
15
80°
63°
16
77°
60°
17
77°
60°
18
78°
59°
19
77°
60°
20
82°
64°
21
79°
57°
22
75°
56°
23
74°
57°
24
77°
58°
25
76°
57°
26
82°
62°
27
83°
65°
28
84°
65°
29
85°
64°
30
84°
56°
31
75°
60°
1
76°
64°
2
75°
59°
3
79°
57°
4
80°
64°
5
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Upper St. Clair
Upper St. Clair's August 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 56° and 69°. The average high for August is 80° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Upper St. Clair. See also: September | October | November.
