S
M
T
W
T
F
S
30
87°
68°
31
89°
67°
1
87°
63°
2
88°
64°
3
90°
72°
4
91°
68°
5
88°
70°
6
85°
69°
7
81°
68°
8
85°
65°
9
86°
59°
10
76°
58°
11
79°
62°
12
77°
60°
13
79°
60°
14
81°
61°
15
81°
60°
16
74°
53°
17
77°
60°
18
78°
58°
19
77°
57°
20
78°
58°
21
72°
57°
22
75°
55°
23
76°
58°
24
77°
57°
25
75°
52°
26
64°
46°
27
63°
44°
28
61°
43°
29
72°
45°
30
62°
42°
1
61°
50°
2
60°
47°
3
61°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chanhassen
Chanhassen's September 2026 forecast shows daily high temperatures ranging from 60° to 91°, with overnight lows between 42° and 72°. The average high for September is 76° with an average low of 57°. 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 Chanhassen. See also: October | November | December.