S
M
T
W
T
F
S
27
63°
47°
28
N/A
29
66°
54°
30
77°
48°
1
67°
45°
2
60°
31°
3
55°
29°
4
61°
40°
5
58°
34°
6
71°
33°
7
64°
36°
8
62°
32°
9
56°
28°
10
66°
49°
11
75°
48°
12
50°
42°
13
50°
40°
14
51°
42°
15
N/A
16
46°
33°
17
57°
40°
18
64°
35°
19
59°
38°
20
58°
42°
21
58°
45°
22
57°
46°
23
53°
45°
24
57°
38°
25
51°
36°
26
50°
36°
27
48°
35°
28
49°
36°
29
47°
26°
30
50°
27°
31
43°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Thunder Bay
Thunder Bay's October 2026 forecast shows daily high temperatures ranging from 43° to 64°, with overnight lows between 26° and 46°. The average high for October is 53° with an average low of 37°. 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.
