S
M
T
W
T
F
S
30
82°
66°
31
89°
65°
1
87°
62°
2
83°
63°
3
84°
66°
4
90°
69°
5
88°
67°
6
82°
66°
7
78°
61°
8
77°
61°
9
76°
57°
10
75°
58°
11
74°
54°
12
73°
52°
13
72°
55°
14
73°
51°
15
77°
56°
16
75°
51°
17
74°
56°
18
75°
56°
19
73°
53°
20
74°
54°
21
76°
56°
22
76°
56°
23
75°
55°
24
77°
55°
25
76°
54°
26
75°
54°
27
76°
53°
28
75°
53°
29
74°
52°
30
74°
54°
1
73°
54°
2
74°
52°
3
73°
51°
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 72° to 90°, with overnight lows between 51° and 69°. The average high for September is 77° 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 Chisago City. See also: October | November | December.