S
M
T
W
T
F
S
30
71°
48°
31
72°
45°
1
74°
52°
2
73°
53°
3
74°
53°
4
74°
52°
5
73°
50°
6
71°
51°
7
71°
50°
8
67°
50°
9
72°
51°
10
72°
49°
11
71°
50°
12
72°
50°
13
71°
48°
14
68°
48°
15
59°
47°
16
67°
48°
17
66°
46°
18
67°
36°
19
59°
34°
20
54°
40°
21
58°
35°
22
56°
33°
23
54°
42°
24
58°
44°
25
64°
42°
26
64°
44°
27
63°
44°
28
63°
43°
29
62°
45°
30
61°
44°
1
58°
44°
2
56°
42°
3
56°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cobalt
Cobalt's September 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 33° and 53°. The average high for September is 65° with an average low of 45°. 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 Cobalt. See also: October | November | December.
