S
M
T
W
T
F
S
26
79°
63°
27
84°
67°
28
85°
68°
29
83°
68°
30
85°
64°
31
85°
59°
1
82°
67°
2
84°
60°
3
78°
58°
4
77°
58°
5
75°
57°
6
76°
59°
7
77°
57°
8
77°
58°
9
78°
58°
10
77°
59°
11
80°
65°
12
81°
65°
13
79°
67°
14
84°
66°
15
84°
58°
16
79°
60°
17
81°
56°
18
76°
57°
19
76°
63°
20
77°
64°
21
78°
65°
22
80°
66°
23
84°
65°
24
80°
57°
25
83°
60°
26
76°
55°
27
75°
56°
28
74°
57°
29
82°
60°
30
79°
62°
31
Hist. Avg.
80°
62°
1
Hist. Avg.
80°
62°
2
Hist. Avg.
80°
61°
3
Hist. Avg.
79°
61°
4
Hist. Avg.
79°
61°
5
Hist. Avg.
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Libertyville
Libertyville's August 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 55° and 68°. The average high for August is 80° with an average low of 61°. 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 Libertyville. See also: September | October | November.