S
M
T
W
T
F
S
30
87°
70°
31
89°
62°
1
88°
65°
2
84°
66°
3
86°
68°
4
89°
64°
5
87°
65°
6
84°
59°
7
82°
59°
8
80°
56°
9
77°
56°
10
76°
54°
11
73°
50°
12
77°
57°
13
75°
56°
14
76°
55°
15
77°
55°
16
74°
50°
17
73°
55°
18
76°
55°
19
73°
52°
20
73°
53°
21
75°
55°
22
76°
55°
23
76°
54°
24
75°
54°
25
75°
53°
26
74°
53°
27
75°
52°
28
75°
52°
29
74°
51°
30
74°
53°
1
73°
53°
2
74°
51°
3
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cannon Falls
Cannon Falls's September 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 50° and 70°. The average high for September is 78° with an average low of 56°. 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 Cannon Falls. See also: October | November | December.
