S
M
T
W
T
F
S
30
102°
75°
31
106°
74°
1
103°
74°
2
107°
72°
3
110°
71°
4
100°
76°
5
105°
70°
6
105°
72°
7
99°
75°
8
99°
75°
9
99°
75°
10
99°
72°
11
100°
74°
12
103°
72°
13
100°
71°
14
95°
67°
15
93°
66°
16
94°
65°
17
92°
67°
18
92°
65°
19
90°
63°
20
88°
60°
21
91°
66°
22
90°
65°
23
86°
64°
24
80°
64°
25
80°
63°
26
82°
63°
27
81°
62°
28
83°
63°
29
82°
63°
30
84°
55°
1
76°
51°
2
77°
52°
3
76°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Carbon
Carbon's September 2026 forecast shows daily high temperatures ranging from 76° to 103°, with overnight lows between 51° and 75°. The average high for September is 89° with an average low of 65°. 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 Carbon. See also: October | November | December.