S
M
T
W
T
F
S
26
87°
68°
27
88°
69°
28
90°
70°
29
92°
68°
30
92°
69°
31
90°
70°
1
89°
70°
2
89°
63°
3
86°
63°
4
84°
62°
5
83°
62°
6
84°
64°
7
85°
63°
8
86°
64°
9
87°
63°
10
90°
64°
11
85°
69°
12
92°
70°
13
90°
69°
14
90°
67°
15
Hist. Avg.
88°
67°
16
Hist. Avg.
88°
66°
17
Hist. Avg.
88°
66°
18
Hist. Avg.
88°
66°
19
Hist. Avg.
88°
66°
20
Hist. Avg.
88°
66°
21
Hist. Avg.
87°
65°
22
Hist. Avg.
87°
65°
23
Hist. Avg.
87°
65°
24
Hist. Avg.
87°
64°
25
Hist. Avg.
87°
64°
26
Hist. Avg.
86°
64°
27
Hist. Avg.
86°
64°
28
Hist. Avg.
86°
63°
29
Hist. Avg.
86°
63°
30
Hist. Avg.
86°
63°
31
Hist. Avg.
85°
62°
1
Hist. Avg.
85°
62°
2
Hist. Avg.
85°
62°
3
Hist. Avg.
85°
62°
4
Hist. Avg.
84°
61°
5
Hist. Avg.
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Festus
Festus's August 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 62° and 70°. The average high for August is 88° 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 Festus. See also: September | October | November.