S
M
T
W
T
F
S
26
86°
68°
27
83°
68°
28
83°
66°
29
84°
68°
30
84°
69°
31
88°
69°
1
86°
68°
2
84°
67°
3
90°
68°
4
86°
65°
5
83°
65°
6
85°
63°
7
83°
61°
8
84°
60°
9
83°
59°
10
83°
60°
11
85°
67°
12
89°
68°
13
89°
65°
14
88°
61°
15
83°
65°
16
83°
67°
17
84°
60°
18
83°
61°
19
83°
60°
20
84°
60°
21
85°
65°
22
88°
65°
23
89°
63°
24
88°
65°
25
89°
64°
26
90°
65°
27
89°
64°
28
87°
63°
29
88°
64°
30
86°
58°
31
83°
55°
1
80°
54°
2
79°
56°
3
79°
56°
4
80°
55°
5
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Forest Park
Forest Park's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 54° and 69°. The average high for August is 85° with an average low of 63°. 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 Forest Park. See also: September | October | November.
