S
M
T
W
T
F
S
31
71°
49°
1
71°
53°
2
73°
49°
3
80°
48°
4
87°
54°
5
80°
69°
6
84°
66°
7
81°
67°
8
81°
70°
9
89°
74°
10
94°
74°
11
91°
66°
12
83°
65°
13
82°
65°
14
74°
59°
15
71°
58°
16
73°
57°
17
77°
60°
18
79°
62°
19
78°
62°
20
81°
61°
21
80°
65°
22
76°
65°
23
79°
64°
24
84°
67°
25
84°
67°
26
83°
68°
27
85°
63°
28
77°
61°
29
77°
65°
30
83°
68°
1
81°
67°
2
80°
68°
3
84°
64°
4
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mount Prospect
Mount Prospect's June 2026 forecast shows daily high temperatures ranging from 71° to 94°, with overnight lows between 57° and 74°. The average high for June is 81° with an average low of 65°. 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 Mount Prospect. See also: July | August | September.
