S
M
T
W
T
F
S
31
66°
46°
1
71°
51°
2
74°
53°
3
71°
54°
4
72°
53°
5
73°
66°
6
71°
59°
7
77°
61°
8
77°
61°
9
75°
60°
10
77°
61°
11
76°
61°
12
71°
60°
13
75°
61°
14
77°
61°
15
77°
62°
16
79°
63°
17
79°
62°
18
74°
60°
19
72°
58°
20
77°
64°
21
76°
63°
22
73°
61°
23
74°
63°
24
74°
60°
25
75°
64°
26
80°
65°
27
81°
66°
28
79°
66°
29
82°
65°
30
82°
58°
1
73°
57°
2
74°
61°
3
75°
64°
4
76°
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 66° to 82°, with overnight lows between 46° and 66°. The average high for June is 75° with an average low of 60°. 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.