S
M
T
W
T
F
S
30
60°
33°
31
69°
28°
1
62°
41°
2
64°
39°
3
62°
36°
4
69°
35°
5
71°
39°
6
72°
35°
7
54°
31°
8
59°
27°
9
64°
27°
10
67°
29°
11
57°
31°
12
62°
38°
13
61°
31°
14
50°
25°
15
56°
26°
16
59°
32°
17
61°
29°
18
61°
32°
19
63°
34°
20
60°
35°
21
57°
34°
22
55°
33°
23
57°
32°
24
56°
28°
25
46°
27°
26
48°
27°
27
56°
30°
28
51°
24°
29
49°
27°
30
46°
22°
1
51°
28°
2
53°
29°
3
55°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cooke City
Cooke City's September 2026 forecast shows daily high temperatures ranging from 46° to 63°, with overnight lows between 22° and 38°. The average high for September is 55° with an average low of 30°. 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 Cooke City. See also: October | November | December.
