S
M
T
W
T
F
S
30
63°
46°
31
76°
46°
1
82°
39°
2
79°
51°
3
68°
47°
4
70°
41°
5
67°
48°
6
63°
51°
7
54°
47°
8
62°
48°
9
71°
47°
10
75°
48°
11
59°
44°
12
56°
41°
13
60°
40°
14
57°
43°
15
55°
39°
16
62°
44°
17
72°
37°
18
72°
45°
19
68°
42°
20
74°
41°
21
77°
40°
22
78°
40°
23
75°
42°
24
80°
40°
25
86°
45°
26
57°
33°
27
57°
33°
28
67°
47°
29
61°
44°
30
66°
47°
1
65°
38°
2
57°
35°
3
51°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cut Bank
Cut Bank's September 2026 forecast shows daily high temperatures ranging from 51° to 86°, with overnight lows between 33° and 47°. The average high for September is 63° with an average low of 40°. 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 Cut Bank. See also: October | November | December.
