S
M
T
W
T
F
S
26
85°
71°
27
85°
64°
28
86°
66°
29
87°
69°
30
91°
66°
31
87°
65°
1
86°
70°
2
87°
65°
3
86°
64°
4
85°
63°
5
85°
64°
6
86°
64°
7
86°
65°
8
87°
67°
9
85°
67°
10
84°
65°
11
88°
69°
12
92°
72°
13
94°
65°
14
89°
64°
15
88°
66°
16
88°
71°
17
91°
66°
18
91°
63°
19
84°
61°
20
83°
62°
21
84°
63°
22
86°
60°
23
82°
61°
24
83°
67°
25
87°
68°
26
83°
70°
27
89°
70°
28
90°
67°
29
91°
61°
30
87°
60°
31
81°
66°
1
86°
66°
2
80°
58°
3
81°
62°
4
79°
67°
5
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lisle
Lisle's August 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 58° and 72°. The average high for August is 86° 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 August weather will actually feel in Lisle. See also: September | October | November.
