S
M
T
W
T
F
S
31
72°
60°
1
80°
59°
2
83°
58°
3
85°
58°
4
79°
64°
5
85°
63°
6
86°
62°
7
88°
68°
8
82°
70°
9
87°
67°
10
89°
66°
11
69°
58°
12
82°
57°
13
73°
58°
14
71°
56°
15
78°
50°
16
74°
57°
17
70°
53°
18
70°
52°
19
77°
56°
20
77°
58°
21
72°
55°
22
73°
56°
23
77°
55°
24
78°
57°
25
80°
62°
26
83°
61°
27
81°
60°
28
78°
58°
29
82°
60°
30
75°
56°
1
76°
61°
2
77°
57°
3
75°
56°
4
77°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Clair
St. Clair's June 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 52° and 63°. The average high for June is 76° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in St. Clair. See also: July | August | September.