S
M
T
W
T
F
S
28
79°
67°
29
84°
66°
30
83°
67°
1
85°
68°
2
96°
77°
3
80°
64°
4
79°
68°
5
82°
69°
6
87°
70°
7
88°
72°
8
89°
71°
9
89°
71°
10
88°
72°
11
87°
71°
12
88°
70°
13
82°
68°
14
85°
70°
15
86°
70°
16
82°
65°
17
80°
63°
18
79°
64°
19
80°
64°
20
80°
65°
21
81°
64°
22
80°
67°
23
85°
70°
24
87°
70°
25
86°
71°
26
87°
71°
27
80°
65°
28
81°
67°
29
84°
69°
30
83°
65°
31
83°
68°
1
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in O'Hare
O'Hare's July 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 63° and 77°. The average high for July is 84° with an average low of 68°. 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 O'Hare. See also: August | September | October.