S
M
T
W
T
F
S
30
68°
46°
31
66°
47°
1
65°
47°
2
65°
48°
3
66°
46°
4
66°
45°
5
64°
46°
6
65°
50°
7
65°
50°
8
64°
51°
9
68°
49°
10
66°
48°
11
63°
47°
12
62°
50°
13
65°
48°
14
70°
52°
15
69°
50°
16
70°
51°
17
69°
52°
18
69°
51°
19
69°
47°
20
Hist. Avg.
64°
46°
21
Hist. Avg.
64°
45°
22
Hist. Avg.
63°
45°
23
Hist. Avg.
63°
45°
24
Hist. Avg.
62°
44°
25
Hist. Avg.
62°
44°
26
Hist. Avg.
61°
44°
27
Hist. Avg.
61°
43°
28
Hist. Avg.
60°
43°
29
Hist. Avg.
60°
42°
30
Hist. Avg.
59°
42°
1
Hist. Avg.
59°
42°
2
Hist. Avg.
58°
41°
3
Hist. Avg.
58°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Calumet
Calumet's September 2026 forecast shows daily high temperatures ranging from 62° to 70°, with overnight lows between 45° and 52°. The average high for September is 66° with an average low of 49°. 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 Calumet. See also: October | November | December.