S
M
T
W
T
F
S
28
84°
76°
29
94°
77°
30
96°
78°
1
97°
78°
2
95°
74°
3
95°
73°
4
89°
74°
5
88°
73°
6
89°
71°
7
88°
70°
8
89°
71°
9
88°
69°
10
86°
70°
11
92°
77°
12
82°
69°
13
81°
63°
14
80°
63°
15
80°
65°
16
83°
69°
17
85°
70°
18
87°
69°
19
81°
67°
20
82°
70°
21
86°
70°
22
88°
71°
23
88°
72°
24
89°
71°
25
89°
72°
26
88°
71°
27
88°
71°
28
89°
72°
29
87°
70°
30
85°
68°
31
80°
65°
1
81°
68°
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 80° to 97°, with overnight lows between 63° and 78°. The average high for July is 87° with an average low of 71°. 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.