S
M
T
W
T
F
S
26
90°
73°
27
86°
68°
28
86°
67°
29
87°
73°
30
89°
69°
31
89°
73°
1
93°
69°
2
89°
68°
3
87°
67°
4
85°
66°
5
86°
67°
6
85°
67°
7
85°
66°
8
86°
67°
9
86°
72°
10
87°
70°
11
87°
73°
12
90°
73°
13
91°
72°
14
92°
70°
15
92°
66°
16
85°
67°
17
85°
71°
18
89°
67°
19
90°
65°
20
84°
64°
21
84°
64°
22
86°
65°
23
85°
67°
24
90°
70°
25
91°
69°
26
91°
66°
27
84°
66°
28
83°
64°
29
83°
69°
30
86°
69°
31
89°
70°
1
89°
69°
2
88°
68°
3
85°
68°
4
85°
67°
5
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Affton
Affton's August 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 64° and 73°. The average high for August is 87° with an average low of 68°. 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 Affton. See also: September | October | November.
