S
M
T
W
T
F
S
26
91°
75°
27
95°
73°
28
88°
72°
29
86°
66°
30
82°
61°
31
81°
68°
1
75°
66°
2
82°
63°
3
82°
61°
4
88°
61°
5
73°
68°
6
82°
68°
7
84°
68°
8
82°
64°
9
88°
64°
10
90°
73°
11
90°
72°
12
82°
70°
13
82°
70°
14
79°
72°
15
88°
73°
16
84°
68°
17
82°
64°
18
84°
64°
19
86°
68°
20
82°
63°
21
86°
63°
22
82°
63°
23
77°
57°
24
79°
54°
25
82°
57°
26
84°
66°
27
84°
63°
28
86°
57°
29
81°
59°
30
81°
73°
31
94°
72°
1
96°
74°
2
96°
72°
3
91°
71°
4
93°
70°
5
91°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Muscatine
Muscatine's August 2026 forecast shows daily high temperatures ranging from 81° to 96°, with overnight lows between 70° and 74°. The average high for August is 92° with an average low of 72°. 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 Muscatine. See also: September | October | November.