S
M
T
W
T
F
S
30
82°
63°
31
84°
63°
1
87°
60°
2
90°
61°
3
92°
63°
4
94°
64°
5
93°
64°
6
88°
63°
7
88°
64°
8
89°
62°
9
86°
58°
10
81°
59°
11
82°
56°
12
84°
57°
13
85°
55°
14
81°
49°
15
85°
54°
16
85°
54°
17
86°
53°
18
85°
54°
19
84°
53°
20
84°
52°
21
83°
52°
22
84°
51°
23
83°
52°
24
82°
52°
25
82°
51°
26
81°
51°
27
80°
50°
28
80°
50°
29
79°
49°
30
78°
49°
1
77°
48°
2
76°
47°
3
77°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Commerce City
Commerce City's September 2026 forecast shows daily high temperatures ranging from 76° to 94°, with overnight lows between 47° and 64°. The average high for September is 84° with an average low of 55°. 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 Commerce City. See also: October | November | December.
