S
M
T
W
T
F
S
28
85°
64°
29
83°
63°
30
80°
59°
1
80°
62°
2
79°
63°
3
82°
61°
4
77°
63°
5
78°
63°
6
77°
57°
7
78°
61°
8
78°
62°
9
79°
64°
10
83°
66°
11
81°
65°
12
79°
64°
13
79°
64°
14
82°
63°
15
79°
62°
16
80°
63°
17
82°
65°
18
85°
65°
19
86°
66°
20
81°
63°
21
78°
60°
22
82°
63°
23
85°
66°
24
86°
66°
25
83°
65°
26
77°
65°
27
79°
61°
28
78°
62°
29
81°
66°
30
85°
65°
31
85°
62°
1
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Clair
St. Clair's July 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 57° and 66°. The average high for July is 81° 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 July weather will actually feel in St. Clair. See also: August | September | October.