S
M
T
W
T
F
S
30
77°
52°
31
81°
49°
1
84°
57°
2
88°
61°
3
85°
56°
4
89°
56°
5
93°
63°
6
75°
50°
7
77°
49°
8
77°
48°
9
72°
49°
10
76°
48°
11
78°
45°
12
71°
51°
13
77°
51°
14
82°
52°
15
81°
52°
16
82°
51°
17
81°
51°
18
76°
50°
19
79°
50°
20
81°
49°
21
77°
49°
22
77°
48°
23
79°
51°
24
80°
50°
25
78°
49°
26
76°
49°
27
78°
50°
28
78°
49°
29
77°
48°
30
77°
48°
1
76°
47°
2
75°
46°
3
73°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Culbertson
Culbertson's September 2026 forecast shows daily high temperatures ranging from 71° to 93°, with overnight lows between 45° and 63°. The average high for September is 79° with an average low of 51°. 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 Culbertson. See also: October | November | December.