S
M
T
W
T
F
S
27
71°
57°
28
73°
56°
29
74°
58°
30
74°
58°
1
73°
57°
2
73°
58°
3
70°
57°
4
72°
57°
5
72°
56°
6
71°
57°
7
72°
55°
8
70°
53°
9
69°
53°
10
68°
53°
11
67°
51°
12
66°
52°
13
67°
50°
14
61°
49°
15
59°
50°
16
58°
49°
17
59°
47°
18
64°
51°
19
66°
52°
20
67°
49°
21
66°
51°
22
63°
49°
23
66°
46°
24
64°
47°
25
59°
47°
26
65°
45°
27
60°
40°
28
56°
38°
29
48°
35°
30
49°
33°
31
48°
36°
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 48° to 74°, with overnight lows between 33° and 58°. The average high for October is 65° with an average low of 50°. 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.
