S
M
T
W
T
F
S
28
80°
64°
29
80°
65°
30
82°
66°
1
84°
65°
2
82°
65°
3
80°
66°
4
82°
62°
5
80°
61°
6
77°
62°
7
80°
63°
8
80°
63°
9
81°
67°
10
84°
67°
11
82°
66°
12
82°
66°
13
85°
68°
14
83°
67°
15
82°
64°
16
82°
66°
17
83°
67°
18
84°
66°
19
86°
66°
20
85°
62°
21
85°
62°
22
88°
65°
23
89°
59°
24
84°
58°
25
80°
59°
26
80°
59°
27
81°
60°
28
81°
64°
29
83°
65°
30
85°
66°
31
86°
66°
1
88°
66°
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 77° to 89°, with overnight lows between 58° and 68°. The average high for July is 83° with an average low of 64°. 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.