S
M
T
W
T
F
S
31
71°
49°
1
71°
53°
2
73°
49°
3
80°
48°
4
86°
69°
5
79°
67°
6
82°
64°
7
79°
66°
8
84°
70°
9
84°
68°
10
85°
70°
11
84°
67°
12
85°
68°
13
86°
65°
14
82°
66°
15
81°
63°
16
78°
64°
17
80°
60°
18
83°
64°
19
83°
65°
20
81°
65°
21
79°
57°
22
75°
58°
23
78°
66°
24
85°
68°
25
86°
62°
26
79°
61°
27
77°
64°
28
79°
66°
29
82°
67°
30
82°
66°
1
81°
67°
2
82°
68°
3
86°
68°
4
85°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Prospect Heights
Prospect Heights's June 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 57° and 70°. The average high for June is 82° 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 Prospect Heights. See also: July | August | September.
