S
M
T
W
T
F
S
30
79°
64°
31
88°
67°
1
86°
59°
2
85°
64°
3
82°
68°
4
86°
69°
5
82°
67°
6
84°
67°
7
80°
64°
8
75°
60°
9
76°
51°
10
76°
53°
11
81°
55°
12
74°
51°
13
67°
50°
14
64°
48°
15
65°
46°
16
69°
52°
17
69°
51°
18
68°
48°
19
66°
47°
20
69°
46°
21
65°
50°
22
69°
51°
23
70°
52°
24
72°
51°
25
70°
50°
26
69°
50°
27
71°
52°
28
70°
51°
29
67°
51°
30
68°
49°
1
61°
43°
2
56°
40°
3
56°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chetek
Chetek's September 2026 forecast shows daily high temperatures ranging from 56° to 81°, with overnight lows between 36° and 64°. The average high for September is 69° with an average low of 50°. 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 Chetek. See also: October | November | December.
