S
M
T
W
T
F
S
28
59°
51°
29
60°
52°
30
58°
52°
1
59°
52°
2
55°
51°
3
56°
52°
4
59°
51°
5
57°
48°
6
60°
48°
7
58°
50°
8
60°
52°
9
63°
52°
10
58°
53°
11
60°
51°
12
61°
52°
13
68°
51°
14
62°
52°
15
60°
50°
16
60°
50°
17
59°
51°
18
64°
51°
19
67°
49°
20
73°
49°
21
68°
53°
22
77°
52°
23
74°
56°
24
69°
56°
25
64°
55°
26
66°
55°
27
68°
56°
28
66°
53°
29
67°
52°
30
66°
54°
31
67°
53°
1
66°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in James Bay
James Bay's July 2026 forecast shows daily high temperatures ranging from 64° to 69°, with overnight lows between 52° and 56°. The average high for July is 67° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in James Bay. See also: August | September | October.