S
M
T
W
T
F
S
28
81°
60°
29
91°
75°
30
92°
76°
1
92°
77°
2
94°
75°
3
91°
72°
4
86°
69°
5
81°
65°
6
80°
60°
7
85°
66°
8
87°
70°
9
86°
65°
10
85°
69°
11
85°
68°
12
87°
67°
13
87°
66°
14
86°
66°
15
94°
67°
16
82°
66°
17
79°
60°
18
80°
66°
19
79°
67°
20
80°
67°
21
84°
66°
22
86°
68°
23
87°
67°
24
83°
67°
25
86°
66°
26
86°
68°
27
87°
68°
28
87°
67°
29
88°
67°
30
86°
68°
31
86°
66°
1
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Dupage Airport
Dupage Airport's July 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 60° and 75°. 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 Dupage Airport. See also: August | September | October.
