S
M
T
W
T
F
S
30
101°
74°
31
101°
76°
1
101°
74°
2
101°
78°
3
101°
76°
4
101°
74°
5
103°
74°
6
105°
72°
7
100°
74°
8
101°
77°
9
102°
71°
10
87°
66°
11
93°
72°
12
96°
71°
13
95°
72°
14
87°
66°
15
84°
61°
16
85°
62°
17
86°
64°
18
84°
61°
19
85°
59°
20
81°
57°
21
87°
64°
22
86°
64°
23
86°
63°
24
86°
64°
25
84°
63°
26
81°
62°
27
82°
62°
28
83°
63°
29
83°
62°
30
79°
55°
1
71°
49°
2
69°
48°
3
68°
47°
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 68° to 102°, with overnight lows between 47° and 77°. The average high for September is 86° 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.
