S
M
T
W
T
F
S
30
88°
69°
31
90°
69°
1
91°
66°
2
89°
65°
3
88°
65°
4
89°
66°
5
86°
65°
6
88°
68°
7
83°
68°
8
81°
68°
9
83°
67°
10
85°
66°
11
85°
65°
12
83°
64°
13
84°
66°
14
82°
66°
15
79°
65°
16
80°
62°
17
82°
64°
18
85°
65°
19
85°
63°
20
81°
64°
21
82°
64°
22
84°
63°
23
83°
63°
24
83°
58°
25
79°
58°
26
82°
62°
27
79°
62°
28
78°
60°
29
79°
60°
30
78°
59°
1
77°
58°
2
80°
52°
3
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Commerce
Commerce's September 2026 forecast shows daily high temperatures ranging from 75° to 91°, with overnight lows between 52° and 69°. The average high for September is 83° with an average low of 63°. 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. See also: October | November | December.
