S
M
T
W
T
F
S
28
85°
72°
29
93°
74°
30
95°
75°
1
97°
74°
2
92°
76°
3
92°
70°
4
90°
71°
5
86°
70°
6
88°
69°
7
86°
68°
8
86°
67°
9
87°
68°
10
84°
64°
11
82°
68°
12
81°
67°
13
80°
61°
14
79°
61°
15
80°
62°
16
82°
66°
17
84°
68°
18
87°
66°
19
81°
64°
20
81°
68°
21
85°
68°
22
87°
69°
23
88°
70°
24
88°
69°
25
89°
70°
26
88°
69°
27
87°
69°
28
88°
68°
29
87°
68°
30
85°
65°
31
80°
62°
1
81°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lemont
Lemont's July 2026 forecast shows daily high temperatures ranging from 79° to 97°, with overnight lows between 61° and 76°. The average high for July is 86° with an average low of 68°. 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 Lemont. See also: August | September | October.