S
M
T
W
T
F
S
30
82°
66°
31
89°
65°
1
88°
60°
2
85°
66°
3
86°
65°
4
87°
69°
5
88°
67°
6
82°
66°
7
81°
64°
8
77°
61°
9
79°
57°
10
75°
55°
11
76°
56°
12
73°
53°
13
70°
52°
14
69°
51°
15
73°
50°
16
75°
51°
17
74°
56°
18
76°
52°
19
75°
55°
20
76°
54°
21
73°
54°
22
74°
51°
23
74°
54°
24
75°
53°
25
74°
48°
26
63°
41°
27
62°
40°
28
60°
40°
29
68°
41°
30
59°
39°
1
60°
46°
2
59°
45°
3
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chisago City
Chisago City's September 2026 forecast shows daily high temperatures ranging from 59° to 88°, with overnight lows between 39° and 69°. The average high for September is 73° with an average low of 53°. 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 Chisago City. See also: October | November | December.