S
M
T
W
T
F
S
30
100°
72°
31
100°
75°
1
100°
72°
2
99°
73°
3
88°
75°
4
98°
75°
5
98°
74°
6
99°
75°
7
99°
75°
8
100°
73°
9
96°
72°
10
99°
73°
11
98°
74°
12
99°
73°
13
98°
73°
14
93°
67°
15
93°
68°
16
94°
67°
17
89°
64°
18
86°
66°
19
89°
69°
20
92°
69°
21
92°
68°
22
91°
68°
23
91°
67°
24
90°
68°
25
91°
67°
26
90°
64°
27
82°
58°
28
80°
57°
29
80°
57°
30
85°
61°
1
88°
63°
2
88°
58°
3
78°
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 78° to 100°, with overnight lows between 54° and 75°. The average high for September is 92° 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.
