S
M
T
W
T
F
S
28
79°
58°
29
79°
60°
30
80°
62°
1
80°
60°
2
79°
58°
3
79°
60°
4
80°
58°
5
78°
58°
6
79°
60°
7
80°
63°
8
80°
66°
9
82°
66°
10
80°
64°
11
81°
65°
12
86°
68°
13
86°
68°
14
84°
67°
15
83°
69°
16
84°
68°
17
86°
69°
18
88°
70°
19
88°
69°
20
89°
70°
21
89°
70°
22
88°
69°
23
85°
69°
24
85°
62°
25
86°
61°
26
80°
62°
27
78°
61°
28
79°
62°
29
80°
66°
30
81°
69°
31
82°
66°
1
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mount Prospect
Mount Prospect's July 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 58° and 70°. The average high for July 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 July weather will actually feel in Mount Prospect. See also: August | September | October.
