S
M
T
W
T
F
S
31
78°
41°
1
76°
53°
2
79°
42°
3
85°
49°
4
90°
51°
5
93°
55°
6
93°
59°
7
89°
64°
8
76°
56°
9
87°
45°
10
89°
60°
11
96°
71°
12
93°
71°
13
90°
66°
14
94°
62°
15
80°
60°
16
80°
51°
17
83°
58°
18
93°
70°
19
83°
64°
20
88°
62°
21
87°
69°
22
80°
65°
23
83°
58°
24
84°
62°
25
80°
60°
26
85°
62°
27
85°
63°
28
84°
63°
29
87°
64°
30
86°
66°
1
87°
63°
2
80°
61°
3
79°
66°
4
81°
62°
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 79° to 93°, with overnight lows between 58° and 70°. The average high for June is 84° with an average low of 64°. 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.