S
M
T
W
T
F
S
27
73°
48°
28
73°
48°
29
77°
43°
30
69°
51°
1
72°
62°
2
66°
45°
3
65°
43°
4
74°
41°
5
62°
39°
6
66°
33°
7
77°
48°
8
68°
41°
9
69°
35°
10
73°
48°
11
61°
55°
12
76°
63°
13
83°
55°
14
62°
49°
15
61°
52°
16
57°
33°
17
52°
34°
18
57°
43°
19
63°
46°
20
65°
47°
21
68°
48°
22
63°
48°
23
61°
44°
24
58°
45°
25
56°
37°
26
60°
43°
27
59°
37°
28
48°
35°
29
48°
41°
30
51°
44°
31
59°
40°
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 83°, with overnight lows between 33° and 63°. The average high for October is 60° with an average low of 44°. 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.
