S
M
T
W
T
F
S
30
81°
72°
31
93°
73°
1
93°
73°
2
98°
72°
3
97°
71°
4
95°
72°
5
94°
70°
6
88°
67°
7
86°
67°
8
87°
67°
9
90°
65°
10
85°
61°
11
83°
60°
12
81°
58°
13
76°
57°
14
76°
55°
15
82°
52°
16
82°
60°
17
81°
59°
18
74°
56°
19
76°
59°
20
81°
58°
21
79°
59°
22
79°
57°
23
76°
56°
24
77°
56°
25
79°
57°
26
75°
50°
27
68°
46°
28
66°
44°
29
67°
48°
30
68°
43°
1
66°
50°
2
70°
51°
3
65°
49°
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 65° to 98°, with overnight lows between 43° and 72°. The average high for September is 80° with an average low of 58°. 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.
