S
M
T
W
T
F
S
27
59°
32°
28
63°
32°
29
59°
39°
30
59°
50°
1
64°
46°
2
64°
45°
3
61°
43°
4
59°
46°
5
63°
41°
6
59°
43°
7
60°
34°
8
63°
34°
9
68°
41°
10
63°
50°
11
63°
45°
12
63°
45°
13
55°
37°
14
59°
32°
15
64°
41°
16
66°
39°
17
70°
46°
18
72°
45°
19
75°
45°
20
75°
50°
21
79°
54°
22
81°
50°
23
77°
52°
24
70°
50°
25
54°
45°
26
59°
39°
27
63°
34°
28
52°
40°
29
54°
37°
30
65°
46°
31
55°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lake St Clair
Lake St Clair's October 2026 forecast shows daily high temperatures ranging from 52° to 65°, with overnight lows between 37° and 46°. The average high for October is 57° with an average low of 41°. 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 Lake St Clair. See also: November | December | January.