S
M
T
W
T
F
S
26
89°
65°
27
91°
67°
28
89°
66°
29
90°
67°
30
90°
67°
31
91°
66°
1
90°
67°
2
89°
66°
3
89°
65°
4
88°
67°
5
91°
66°
6
89°
65°
7
81°
64°
8
88°
65°
9
89°
66°
10
89°
66°
11
88°
65°
12
87°
65°
13
87°
64°
14
83°
63°
15
86°
64°
16
85°
65°
17
84°
64°
18
90°
64°
19
89°
63°
20
88°
58°
21
85°
52°
22
78°
53°
23
78°
57°
24
81°
58°
25
80°
58°
26
77°
61°
27
81°
60°
28
84°
61°
29
86°
60°
30
82°
59°
31
84°
58°
1
82°
52°
2
76°
50°
3
74°
57°
4
72°
58°
5
83°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mound City
Mound City's August 2026 forecast shows daily high temperatures ranging from 72° to 91°, with overnight lows between 47° and 67°. The average high for August is 85° with an average low of 62°. 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 Mound City. See also: September | October | November.