S
M
T
W
T
F
S
28
79°
60°
29
90°
73°
30
90°
77°
1
91°
75°
2
90°
69°
3
85°
70°
4
84°
65°
5
79°
63°
6
81°
64°
7
84°
65°
8
87°
65°
9
84°
63°
10
83°
62°
11
80°
64°
12
83°
64°
13
83°
66°
14
84°
64°
15
84°
62°
16
83°
63°
17
78°
58°
18
79°
64°
19
79°
65°
20
82°
65°
21
84°
64°
22
85°
66°
23
86°
65°
24
82°
65°
25
85°
64°
26
86°
66°
27
86°
66°
28
85°
65°
29
86°
66°
30
85°
65°
31
83°
64°
1
79°
61°
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 78° to 87°, with overnight lows between 58° and 70°. 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.