S
M
T
W
T
F
S
28
84°
73°
29
93°
74°
30
95°
75°
1
97°
74°
2
95°
76°
3
92°
70°
4
90°
71°
5
86°
70°
6
88°
69°
7
86°
68°
8
86°
67°
9
84°
65°
10
86°
68°
11
82°
68°
12
81°
67°
13
82°
67°
14
84°
66°
15
87°
68°
16
87°
69°
17
88°
69°
18
88°
68°
19
86°
69°
20
84°
68°
21
82°
69°
22
84°
70°
23
87°
69°
24
87°
69°
25
83°
68°
26
84°
69°
27
87°
70°
28
88°
70°
29
87°
69°
30
87°
68°
31
79°
68°
1
82°
67°
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 65° and 76°. The average high for July is 87° with an average low of 69°. 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.