S
M
T
W
T
F
S
30
70°
44°
31
71°
43°
1
69°
42°
2
70°
38°
3
70°
43°
4
71°
41°
5
73°
36°
6
65°
41°
7
66°
37°
8
66°
37°
9
67°
38°
10
70°
39°
11
70°
39°
12
69°
40°
13
67°
39°
14
69°
41°
15
73°
47°
16
74°
47°
17
73°
45°
18
70°
40°
19
71°
47°
20
72°
43°
21
Hist. Avg.
74°
47°
22
Hist. Avg.
74°
47°
23
Hist. Avg.
74°
47°
24
Hist. Avg.
74°
47°
25
Hist. Avg.
74°
48°
26
Hist. Avg.
75°
48°
27
Hist. Avg.
75°
48°
28
Hist. Avg.
75°
48°
29
Hist. Avg.
75°
49°
30
Hist. Avg.
76°
49°
1
Hist. Avg.
76°
49°
2
Hist. Avg.
76°
50°
3
Hist. Avg.
76°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Copeton
Copeton's September 2026 forecast shows daily high temperatures ranging from 65° to 74°, with overnight lows between 36° and 47°. The average high for September is 70° with an average low of 41°. 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 Copeton. See also: October | November | December.