S
M
T
W
T
F
S
31
79°
68°
1
86°
68°
2
82°
59°
3
82°
54°
4
86°
57°
5
86°
69°
6
88°
72°
7
81°
71°
8
81°
69°
9
86°
69°
10
93°
71°
11
93°
70°
12
89°
69°
13
90°
69°
14
86°
66°
15
88°
65°
16
86°
62°
17
85°
64°
18
87°
66°
19
87°
68°
20
89°
68°
21
89°
67°
22
83°
68°
23
89°
69°
24
91°
70°
25
92°
70°
26
92°
69°
27
90°
69°
28
89°
70°
29
89°
70°
30
86°
69°
1
86°
68°
2
87°
69°
3
86°
69°
4
86°
67°
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 81° to 93°, with overnight lows between 62° and 72°. The average high for June is 88° with an average low of 68°. 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.