S
M
T
W
T
F
S
28
82°
61°
29
94°
73°
30
96°
79°
1
93°
76°
2
91°
77°
3
86°
72°
4
80°
69°
5
78°
69°
6
80°
69°
7
81°
69°
8
83°
68°
9
82°
67°
10
82°
71°
11
83°
70°
12
85°
68°
13
84°
69°
14
81°
65°
15
77°
63°
16
80°
67°
17
76°
62°
18
77°
68°
19
77°
69°
20
78°
69°
21
82°
68°
22
84°
70°
23
85°
70°
24
81°
69°
25
84°
70°
26
84°
71°
27
85°
71°
28
85°
70°
29
86°
71°
30
84°
70°
31
84°
69°
1
78°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Wilmette
Wilmette's July 2026 forecast shows daily high temperatures ranging from 76° to 93°, with overnight lows between 62° and 77°. The average high for July is 82° with an average low of 69°. 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 Wilmette. See also: August | September | October.