S
M
T
W
T
F
S
26
92°
74°
27
91°
74°
28
91°
73°
29
88°
73°
30
85°
72°
31
86°
72°
1
84°
71°
2
85°
72°
3
85°
72°
4
87°
69°
5
85°
69°
6
84°
68°
7
85°
69°
8
84°
72°
9
84°
71°
10
85°
71°
11
84°
70°
12
85°
69°
13
85°
71°
14
86°
71°
15
87°
72°
16
90°
73°
17
90°
72°
18
91°
72°
19
90°
71°
20
91°
71°
21
84°
61°
22
82°
62°
23
82°
64°
24
83°
63°
25
84°
64°
26
89°
67°
27
91°
69°
28
91°
70°
29
90°
69°
30
91°
61°
31
84°
61°
1
83°
65°
2
89°
67°
3
90°
68°
4
90°
69°
5
91°
67°
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 82° to 92°, with overnight lows between 61° and 74°. The average high for August is 87° with an average low of 69°. 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.