S
M
T
W
T
F
S
30
81°
72°
31
93°
73°
1
96°
71°
2
96°
70°
3
94°
71°
4
95°
70°
5
94°
70°
6
86°
67°
7
86°
67°
8
80°
62°
9
83°
61°
10
82°
61°
11
80°
57°
12
79°
56°
13
79°
57°
14
80°
58°
15
82°
60°
16
82°
60°
17
81°
59°
18
82°
60°
19
82°
61°
20
81°
60°
21
82°
60°
22
82°
59°
23
81°
59°
24
81°
58°
25
80°
57°
26
80°
58°
27
81°
57°
28
80°
57°
29
79°
56°
30
79°
56°
1
78°
55°
2
78°
55°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Muscatine
Muscatine's September 2026 forecast shows daily high temperatures ranging from 77° to 96°, with overnight lows between 54° and 71°. The average high for September is 83° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Muscatine. See also: October | November | December.
