S
M
T
W
T
F
S
26
91°
75°
27
91°
72°
28
91°
72°
29
92°
73°
30
91°
72°
31
91°
74°
1
90°
74°
2
90°
73°
3
93°
76°
4
94°
74°
5
92°
75°
6
92°
75°
7
94°
72°
8
93°
72°
9
94°
73°
10
93°
74°
11
93°
74°
12
92°
75°
13
90°
74°
14
90°
74°
15
91°
75°
16
90°
75°
17
94°
74°
18
94°
74°
19
91°
73°
20
90°
71°
21
91°
73°
22
93°
74°
23
92°
73°
24
89°
74°
25
90°
71°
26
89°
71°
27
93°
74°
28
93°
71°
29
92°
70°
30
88°
70°
31
88°
71°
1
88°
70°
2
90°
70°
3
91°
71°
4
91°
72°
5
88°
73°
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 88° to 94°, with overnight lows between 70° and 76°. The average high for August is 91° with an average low of 73°. 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.
