S
M
T
W
T
F
S
27
64°
34°
28
54°
33°
29
57°
36°
30
54°
33°
1
55°
31°
2
52°
32°
3
48°
35°
4
48°
37°
5
50°
40°
6
60°
39°
7
56°
33°
8
60°
32°
9
48°
33°
10
48°
37°
11
50°
38°
12
54°
38°
13
56°
41°
14
57°
37°
15
59°
37°
16
56°
33°
17
54°
29°
18
47°
26°
19
46°
24°
20
42°
30°
21
43°
33°
22
45°
31°
23
51°
22°
24
45°
19°
25
40°
21°
26
37°
27°
27
39°
22°
28
40°
21°
29
38°
20°
30
36°
28°
31
45°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Thunder Bay
Thunder Bay's October 2026 forecast shows daily high temperatures ranging from 36° to 64°, with overnight lows between 19° and 41°. The average high for October is 50° with an average low of 31°. 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 Thunder Bay. See also: November | December | January.
