S
M
T
W
T
F
S
31
77°
54°
1
70°
56°
2
76°
45°
3
85°
52°
4
87°
68°
5
79°
66°
6
83°
64°
7
84°
70°
8
84°
69°
9
86°
68°
10
86°
71°
11
85°
68°
12
87°
67°
13
87°
65°
14
86°
65°
15
83°
62°
16
81°
63°
17
83°
60°
18
84°
64°
19
84°
65°
20
83°
65°
21
80°
58°
22
76°
58°
23
79°
66°
24
86°
68°
25
87°
62°
26
80°
61°
27
78°
63°
28
79°
66°
29
82°
67°
30
83°
67°
1
82°
66°
2
83°
67°
3
86°
68°
4
87°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Lemont
Lemont's June 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 58° and 71°. The average high for June is 83° 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 Lemont. See also: July | August | September.