S
M
T
W
T
F
S
30
93°
71°
31
95°
70°
1
97°
69°
2
98°
70°
3
99°
71°
4
100°
72°
5
100°
71°
6
101°
75°
7
94°
73°
8
94°
73°
9
95°
71°
10
96°
67°
11
93°
68°
12
92°
72°
13
95°
69°
14
97°
70°
15
97°
71°
16
95°
73°
17
96°
70°
18
99°
70°
19
100°
69°
20
97°
71°
21
99°
73°
22
92°
69°
23
77°
63°
24
85°
63°
25
84°
62°
26
87°
56°
27
86°
52°
28
85°
50°
29
89°
55°
30
92°
64°
1
93°
71°
2
89°
72°
3
82°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Muscle Shoals
Muscle Shoals's September 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 55° and 72°. The average high for September is 89° with an average low of 66°. 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 Muscle Shoals. See also: October | November | December.