S
M
T
W
T
F
S
28
82°
68°
29
88°
70°
30
89°
69°
1
90°
63°
2
86°
63°
3
83°
70°
4
86°
71°
5
89°
64°
6
86°
63°
7
83°
66°
8
83°
64°
9
82°
64°
10
83°
65°
11
84°
66°
12
88°
65°
13
86°
69°
14
84°
68°
15
87°
65°
16
85°
65°
17
84°
71°
18
89°
71°
19
84°
69°
20
84°
71°
21
85°
71°
22
85°
70°
23
86°
66°
24
84°
66°
25
85°
65°
26
85°
70°
27
88°
70°
28
88°
66°
29
86°
65°
30
85°
66°
31
84°
66°
1
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Wheaton
Wheaton's July 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 63° and 71°. The average high for July is 85° with an average low of 67°. 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 Wheaton. See also: August | September | October.
