S
M
T
W
T
F
S
27
66°
49°
28
67°
48°
29
67°
49°
30
66°
46°
1
64°
48°
2
64°
48°
3
65°
47°
4
66°
40°
5
65°
40°
6
57°
41°
7
56°
41°
8
57°
42°
9
61°
40°
10
58°
40°
11
56°
45°
12
55°
46°
13
55°
45°
14
54°
43°
15
54°
44°
16
53°
40°
17
52°
39°
18
51°
39°
19
51°
38°
20
50°
37°
21
51°
38°
22
50°
39°
23
52°
38°
24
53°
38°
25
53°
38°
26
52°
40°
27
52°
39°
28
51°
45°
29
50°
44°
30
Hist. Avg.
52°
40°
31
Hist. Avg.
51°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in James Bay
James Bay's October 2026 forecast shows daily high temperatures ranging from 50° to 67°, with overnight lows between 37° and 49°. The average high for October is 57° with an average low of 42°. 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 James Bay. See also: November | December | January.