S
M
T
W
T
F
S
28
82°
65°
29
85°
64°
30
88°
68°
1
93°
72°
2
94°
70°
3
93°
69°
4
93°
68°
5
86°
63°
6
86°
65°
7
85°
66°
8
86°
63°
9
84°
66°
10
87°
67°
11
82°
68°
12
82°
67°
13
83°
67°
14
82°
66°
15
82°
67°
16
85°
68°
17
82°
68°
18
88°
69°
19
88°
69°
20
87°
68°
21
87°
69°
22
84°
68°
23
85°
69°
24
88°
69°
25
87°
67°
26
83°
66°
27
86°
68°
28
87°
69°
29
82°
68°
30
87°
66°
31
83°
62°
1
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Crystal Lake
Crystal Lake's July 2026 forecast shows daily high temperatures ranging from 81° to 94°, with overnight lows between 62° and 72°. The average high for July is 86° with an average low of 67°. 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 Crystal Lake. See also: August | September | October.
