S
M
T
W
T
F
S
30
73°
55°
31
75°
58°
1
74°
62°
2
76°
62°
3
81°
63°
4
80°
62°
5
77°
60°
6
76°
60°
7
71°
60°
8
72°
59°
9
75°
60°
10
76°
59°
11
77°
60°
12
79°
60°
13
77°
59°
14
78°
59°
15
73°
56°
16
67°
53°
17
70°
57°
18
72°
57°
19
73°
56°
20
73°
58°
21
75°
54°
22
76°
52°
23
76°
51°
24
74°
50°
25
75°
41°
26
68°
53°
27
73°
54°
28
74°
55°
29
76°
47°
30
73°
39°
1
70°
41°
2
66°
46°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coon Rapids
Coon Rapids's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 39° and 63°. The average high for September is 74° with an average low of 55°. 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 Coon Rapids. See also: October | November | December.