S
M
T
W
T
F
S
31
78°
53°
1
74°
49°
2
75°
48°
3
79°
57°
4
82°
63°
5
81°
64°
6
84°
64°
7
83°
64°
8
84°
63°
9
83°
65°
10
83°
64°
11
84°
62°
12
81°
61°
13
80°
62°
14
81°
58°
15
73°
54°
16
73°
54°
17
74°
55°
18
76°
60°
19
79°
59°
20
79°
62°
21
77°
60°
22
80°
64°
23
81°
62°
24
81°
62°
25
79°
64°
26
85°
64°
27
84°
59°
28
77°
57°
29
77°
58°
30
78°
57°
1
82°
64°
2
84°
65°
3
84°
64°
4
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Crystal Lake
Crystal Lake's June 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 48° and 65°. The average high for June is 80° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Crystal Lake. See also: July | August | September.