S
M
T
W
T
F
S
28
82°
61°
29
76°
58°
30
75°
58°
1
77°
60°
2
78°
63°
3
78°
61°
4
79°
64°
5
80°
66°
6
85°
67°
7
86°
69°
8
87°
68°
9
87°
68°
10
86°
69°
11
87°
69°
12
86°
67°
13
81°
66°
14
84°
67°
15
85°
67°
16
81°
62°
17
78°
61°
18
78°
61°
19
79°
62°
20
79°
61°
21
80°
61°
22
79°
64°
23
84°
67°
24
86°
68°
25
85°
68°
26
86°
67°
27
80°
62°
28
80°
64°
29
83°
66°
30
82°
62°
31
82°
59°
1
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Winnetka
Winnetka's July 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 58° and 69°. The average high for July is 82° with an average low of 64°. 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 Winnetka. See also: August | September | October.
