S
M
T
W
T
F
S
26
80°
61°
27
82°
63°
28
82°
61°
29
83°
62°
30
85°
63°
31
86°
64°
1
85°
57°
2
84°
57°
3
81°
58°
4
81°
57°
5
79°
57°
6
81°
58°
7
81°
56°
8
82°
59°
9
81°
62°
10
82°
63°
11
81°
63°
12
82°
62°
13
82°
63°
14
86°
60°
15
86°
57°
16
83°
61°
17
84°
56°
18
82°
56°
19
80°
55°
20
79°
54°
21
80°
59°
22
80°
56°
23
79°
56°
24
81°
62°
25
79°
60°
26
84°
62°
27
84°
62°
28
83°
61°
29
84°
61°
30
81°
56°
31
82°
54°
1
78°
53°
2
78°
53°
3
77°
58°
4
77°
54°
5
81°
52°
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 77° to 86°, with overnight lows between 52° and 64°. The average high for August is 82° with an average low of 59°. 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.
