S
M
T
W
T
F
S
27
74°
38°
28
66°
40°
29
67°
48°
30
66°
47°
1
64°
48°
2
63°
51°
3
72°
51°
4
74°
50°
5
74°
49°
6
70°
40°
7
71°
36°
8
67°
35°
9
57°
34°
10
57°
42°
11
60°
41°
12
58°
45°
13
63°
42°
14
69°
39°
15
69°
40°
16
64°
35°
17
60°
35°
18
54°
31°
19
59°
33°
20
53°
40°
21
59°
41°
22
61°
39°
23
61°
35°
24
53°
28°
25
51°
34°
26
50°
27°
27
51°
26°
28
46°
22°
29
44°
25°
30
44°
28°
31
55°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. Clair
St. Clair's October 2026 forecast shows daily high temperatures ranging from 44° to 74°, with overnight lows between 22° and 51°. The average high for October is 61° with an average low of 38°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in St. Clair. See also: November | December | January.
