S
M
T
W
T
F
S
28
76°
62°
29
93°
69°
30
93°
78°
1
93°
77°
2
90°
71°
3
86°
68°
4
82°
66°
5
78°
63°
6
81°
60°
7
85°
64°
8
84°
69°
9
83°
67°
10
80°
65°
11
81°
67°
12
82°
68°
13
85°
67°
14
85°
68°
15
87°
69°
16
86°
68°
17
82°
63°
18
78°
65°
19
77°
67°
20
78°
60°
21
77°
60°
22
77°
62°
23
79°
66°
24
79°
65°
25
80°
64°
26
81°
67°
27
78°
67°
28
85°
68°
29
84°
68°
30
85°
67°
31
84°
68°
1
84°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Gurnee
Gurnee's July 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 60° and 69°. The average high for July is 82° with an average low of 66°. 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 Gurnee. See also: August | September | October.