S
M
T
W
T
F
S
30
77°
53°
31
78°
41°
1
66°
52°
2
76°
40°
3
77°
35°
4
78°
46°
5
79°
47°
6
82°
40°
7
82°
49°
8
80°
43°
9
80°
40°
10
79°
39°
11
81°
32°
12
83°
37°
13
77°
34°
14
69°
47°
15
71°
44°
16
71°
44°
17
70°
51°
18
67°
50°
19
67°
38°
20
70°
32°
21
68°
36°
22
N/A
23
55°
47°
24
57°
47°
25
65°
41°
26
69°
36°
27
71°
33°
28
62°
39°
29
57°
47°
30
N/A
1
59°
36°
2
68°
30°
3
76°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cimarron
Cimarron's September 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 30° and 45°. The average high for September is 68° with an average low of 37°. 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 Cimarron. See also: October | November | December.