S
M
T
W
T
F
S
30
89°
56°
31
88°
51°
1
82°
53°
2
80°
52°
3
81°
51°
4
82°
50°
5
80°
49°
6
80°
50°
7
83°
50°
8
85°
49°
9
82°
50°
10
78°
47°
11
78°
48°
12
79°
48°
13
76°
47°
14
77°
50°
15
80°
52°
16
84°
53°
17
84°
49°
18
83°
43°
19
75°
47°
20
78°
48°
21
82°
51°
22
83°
42°
23
81°
40°
24
71°
42°
25
73°
42°
26
70°
40°
27
71°
40°
28
Hist. Avg.
76°
43°
29
Hist. Avg.
75°
42°
30
Hist. Avg.
74°
42°
1
Hist. Avg.
74°
42°
2
Hist. Avg.
74°
41°
3
Hist. Avg.
73°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Commerce City
Commerce City's September 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 40° and 56°. The average high for September is 80° with an average low of 48°. 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.
