S
M
T
W
T
F
S
28
71°
54°
29
63°
54°
30
73°
53°
1
87°
52°
2
85°
54°
3
80°
57°
4
77°
51°
5
74°
46°
6
75°
56°
7
83°
59°
8
75°
52°
9
78°
53°
10
77°
50°
11
77°
53°
12
76°
52°
13
78°
55°
14
79°
58°
15
80°
57°
16
77°
54°
17
79°
62°
18
70°
55°
19
71°
56°
20
70°
54°
21
72°
55°
22
72°
55°
23
73°
56°
24
72°
56°
25
74°
55°
26
70°
55°
27
71°
54°
28
73°
55°
29
71°
55°
30
72°
56°
31
75°
58°
1
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Thunder Bay Airport
Thunder Bay Airport's July 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 46° and 62°. The average high for July is 75° with an average low of 55°. 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 Thunder Bay Airport. See also: August | September | October.
