S
M
T
W
T
F
S
30
Hist. Avg.
62°
29°
31
Hist. Avg.
61°
29°
1
Hist. Avg.
61°
29°
2
Hist. Avg.
61°
29°
3
Hist. Avg.
61°
28°
4
Hist. Avg.
61°
28°
5
Hist. Avg.
60°
28°
6
Hist. Avg.
60°
27°
7
Hist. Avg.
60°
27°
8
Hist. Avg.
60°
27°
9
Hist. Avg.
59°
26°
10
Hist. Avg.
59°
26°
11
Hist. Avg.
59°
26°
12
Hist. Avg.
59°
26°
13
Hist. Avg.
58°
25°
14
Hist. Avg.
58°
25°
15
Hist. Avg.
58°
25°
16
Hist. Avg.
57°
24°
17
Hist. Avg.
57°
24°
18
Hist. Avg.
57°
24°
19
Hist. Avg.
56°
24°
20
Hist. Avg.
56°
23°
21
Hist. Avg.
56°
23°
22
Hist. Avg.
55°
23°
23
Hist. Avg.
55°
22°
24
Hist. Avg.
55°
22°
25
Hist. Avg.
54°
22°
26
Hist. Avg.
54°
21°
27
Hist. Avg.
54°
21°
28
Hist. Avg.
53°
21°
29
Hist. Avg.
53°
21°
30
Hist. Avg.
52°
20°
1
Hist. Avg.
52°
20°
2
Hist. Avg.
52°
20°
3
Hist. Avg.
51°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Copper Mountain
Copper Mountain's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Copper Mountain. See also: October | November | December.