S
M
T
W
T
F
S
26
84°
66°
27
85°
66°
28
84°
65°
29
85°
66°
30
84°
65°
31
84°
64°
1
78°
62°
2
77°
60°
3
77°
62°
4
80°
64°
5
81°
64°
6
83°
63°
7
83°
64°
8
84°
64°
9
84°
65°
10
83°
65°
11
84°
64°
12
84°
65°
13
83°
65°
14
86°
61°
15
85°
63°
16
77°
63°
17
82°
61°
18
84°
61°
19
83°
56°
20
80°
54°
21
76°
54°
22
76°
55°
23
77°
56°
24
77°
54°
25
76°
58°
26
76°
58°
27
79°
55°
28
82°
55°
29
75°
54°
30
73°
53°
31
74°
53°
1
74°
54°
2
75°
53°
3
75°
53°
4
76°
52°
5
76°
53°
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 73° to 86°, with overnight lows between 52° and 66°. The average high for August is 80° with an average low of 60°. 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.
