S
M
T
W
T
F
S
26
91°
71°
27
88°
68°
28
79°
68°
29
80°
64°
30
86°
63°
31
82°
71°
1
76°
66°
2
76°
66°
3
82°
63°
4
86°
68°
5
83°
70°
6
80°
69°
7
86°
69°
8
84°
70°
9
86°
67°
10
88°
73°
11
80°
68°
12
83°
69°
13
77°
70°
14
83°
73°
15
79°
73°
16
86°
69°
17
81°
67°
18
84°
68°
19
79°
65°
20
76°
63°
21
77°
62°
22
80°
65°
23
81°
66°
24
79°
65°
25
78°
64°
26
80°
64°
27
79°
63°
28
74°
62°
29
76°
62°
30
80°
65°
31
82°
67°
1
83°
67°
2
84°
66°
3
82°
66°
4
81°
64°
5
80°
65°
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 86°, with overnight lows between 62° and 73°. The average high for August is 80° with an average low of 66°. 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.
