S
M
T
W
T
F
S
28
94°
73°
29
95°
74°
30
96°
74°
1
95°
73°
2
96°
73°
3
94°
76°
4
93°
71°
5
89°
70°
6
86°
71°
7
88°
73°
8
88°
70°
9
90°
72°
10
86°
71°
11
86°
68°
12
89°
67°
13
87°
67°
14
91°
70°
15
96°
73°
16
93°
72°
17
91°
69°
18
94°
68°
19
92°
69°
20
92°
68°
21
88°
67°
22
87°
65°
23
88°
68°
24
93°
73°
25
94°
72°
26
94°
73°
27
93°
72°
28
93°
72°
29
91°
71°
30
89°
70°
31
87°
70°
1
85°
68°
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 85° to 96°, with overnight lows between 65° and 73°. The average high for July is 90° with an average low of 70°. 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.