S
M
T
W
T
F
S
28
79°
66°
29
82°
65°
30
82°
58°
1
73°
57°
2
74°
61°
3
75°
64°
4
76°
63°
5
79°
66°
6
79°
60°
7
78°
61°
8
80°
64°
9
79°
61°
10
77°
59°
11
75°
60°
12
77°
60°
13
77°
59°
14
78°
59°
15
77°
60°
16
77°
59°
17
78°
61°
18
79°
63°
19
80°
67°
20
80°
68°
21
84°
62°
22
82°
66°
23
84°
64°
24
81°
61°
25
77°
60°
26
78°
61°
27
78°
67°
28
79°
67°
29
84°
68°
30
85°
65°
31
83°
68°
1
84°
68°
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 73° to 85°, with overnight lows between 57° and 68°. The average high for July is 79° 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.