S
M
T
W
T
F
S
28
74°
42°
29
72°
43°
30
72°
45°
1
74°
49°
2
76°
45°
3
74°
48°
4
74°
54°
5
81°
50°
6
84°
51°
7
84°
51°
8
83°
52°
9
85°
51°
10
85°
52°
11
86°
50°
12
85°
48°
13
84°
47°
14
79°
48°
15
82°
51°
16
83°
52°
17
83°
50°
18
83°
54°
19
Hist. Avg.
83°
49°
20
Hist. Avg.
83°
49°
21
Hist. Avg.
83°
49°
22
Hist. Avg.
83°
49°
23
Hist. Avg.
83°
49°
24
Hist. Avg.
83°
49°
25
Hist. Avg.
83°
49°
26
Hist. Avg.
83°
49°
27
Hist. Avg.
83°
49°
28
Hist. Avg.
83°
49°
29
Hist. Avg.
83°
49°
30
Hist. Avg.
83°
49°
31
Hist. Avg.
83°
49°
1
Hist. Avg.
83°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Crystal Lake
Crystal Lake's July 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 42° and 54°. The average high for July is 80° with an average low of 49°. 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.
