S
M
T
W
T
F
S
30
70°
64°
31
82°
65°
1
90°
62°
2
75°
57°
3
73°
58°
4
74°
58°
5
75°
59°
6
78°
62°
7
75°
59°
8
71°
64°
9
75°
56°
10
66°
55°
11
69°
55°
12
65°
54°
13
66°
53°
14
64°
55°
15
68°
52°
16
69°
55°
17
66°
55°
18
68°
54°
19
68°
55°
20
67°
55°
21
68°
54°
22
67°
53°
23
64°
52°
24
66°
53°
25
63°
52°
26
61°
51°
27
56°
47°
28
54°
49°
29
55°
45°
30
54°
44°
1
53°
49°
2
53°
49°
3
57°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Munising
Munising's September 2026 forecast shows daily high temperatures ranging from 53° to 78°, with overnight lows between 44° and 64°. The average high for September is 66° with an average low of 54°. 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 Munising. See also: October | November | December.
