S
M
T
W
T
F
S
30
76°
55°
31
77°
52°
1
79°
51°
2
75°
50°
3
74°
53°
4
77°
59°
5
81°
57°
6
80°
50°
7
77°
50°
8
73°
49°
9
77°
56°
10
77°
54°
11
75°
55°
12
72°
55°
13
72°
50°
14
73°
47°
15
69°
46°
16
70°
47°
17
71°
53°
18
75°
53°
19
77°
55°
20
78°
53°
21
74°
47°
22
75°
51°
23
68°
45°
24
75°
44°
25
67°
43°
26
66°
43°
27
Hist. Avg.
72°
47°
28
Hist. Avg.
71°
46°
29
Hist. Avg.
71°
46°
30
Hist. Avg.
70°
46°
1
Hist. Avg.
70°
45°
2
Hist. Avg.
70°
45°
3
Hist. Avg.
69°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Manitou Beach-Devils Lake
Manitou Beach-Devils Lake's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 43° and 59°. The average high for September is 74° with an average low of 51°. 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 Manitou Beach-Devils Lake. See also: October | November | December.