S
M
T
W
T
F
S
30
70°
44°
31
73°
40°
1
73°
35°
2
69°
33°
3
66°
34°
4
68°
35°
5
70°
39°
6
71°
42°
7
71°
34°
8
66°
36°
9
65°
33°
10
66°
37°
11
69°
41°
12
72°
32°
13
66°
34°
14
71°
41°
15
74°
41°
16
73°
32°
17
71°
33°
18
65°
34°
19
70°
33°
20
69°
36°
21
69°
38°
22
68°
39°
23
68°
38°
24
67°
37°
25
60°
36°
26
65°
36°
27
67°
37°
28
68°
37°
29
66°
36°
30
67°
37°
1
66°
33°
2
58°
26°
3
57°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Columbine
Columbine's September 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 26° and 44°. The average high for September is 68° with an average low of 36°. 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 Columbine. See also: October | November | December.