S
M
T
W
T
F
S
26
87°
71°
27
87°
71°
28
86°
72°
29
86°
71°
30
84°
68°
31
79°
65°
1
81°
69°
2
78°
69°
3
79°
66°
4
84°
70°
5
85°
71°
6
85°
69°
7
79°
66°
8
78°
67°
9
78°
67°
10
81°
68°
11
82°
69°
12
83°
71°
13
85°
70°
14
86°
69°
15
85°
70°
16
87°
65°
17
84°
61°
18
77°
59°
19
75°
59°
20
76°
60°
21
77°
59°
22
77°
59°
23
78°
60°
24
77°
61°
25
80°
64°
26
81°
61°
27
80°
59°
28
75°
58°
29
76°
62°
30
80°
66°
31
80°
58°
1
79°
57°
2
75°
56°
3
74°
61°
4
77°
65°
5
82°
57°
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 74° to 87°, with overnight lows between 56° and 72°. The average high for August is 81° 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 Forest Park. See also: September | October | November.
