S
M
T
W
T
F
S
28
77°
58°
29
77°
57°
30
78°
56°
1
73°
52°
2
73°
53°
3
74°
57°
4
76°
54°
5
74°
53°
6
73°
54°
7
73°
53°
8
74°
55°
9
74°
56°
10
75°
57°
11
78°
57°
12
79°
61°
13
80°
62°
14
79°
61°
15
75°
57°
16
74°
55°
17
75°
57°
18
75°
55°
19
76°
55°
20
77°
56°
21
76°
55°
22
77°
55°
23
78°
57°
24
80°
57°
25
79°
59°
26
80°
62°
27
82°
63°
28
83°
56°
29
76°
56°
30
75°
55°
31
77°
57°
1
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Belleville
Belleville's July 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 52° and 63°. The average high for July is 77° with an average low of 57°. 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 Belleville. See also: August | September | October.