S
M
T
W
T
F
S
30
91°
73°
31
87°
69°
1
86°
65°
2
84°
62°
3
82°
63°
4
84°
64°
5
90°
62°
6
75°
65°
7
93°
72°
8
95°
73°
9
107°
77°
10
97°
76°
11
90°
74°
12
89°
70°
13
86°
72°
14
86°
68°
15
81°
66°
16
80°
68°
17
80°
64°
18
80°
62°
19
82°
62°
20
82°
68°
21
80°
68°
22
82°
65°
23
87°
68°
24
86°
67°
25
87°
68°
26
87°
68°
27
86°
67°
28
85°
66°
29
90°
66°
30
89°
67°
1
90°
69°
2
79°
63°
3
80°
66°
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 79° to 90°, with overnight lows between 63° and 69°. The average high for September is 86° with an average low of 67°. 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.
