S
M
T
W
T
F
S
30
78°
56°
31
79°
54°
1
73°
51°
2
69°
52°
3
74°
49°
4
79°
52°
5
75°
50°
6
77°
52°
7
80°
50°
8
77°
50°
9
73°
52°
10
71°
45°
11
69°
44°
12
70°
52°
13
70°
48°
14
71°
44°
15
76°
49°
16
75°
48°
17
69°
48°
18
67°
46°
19
67°
44°
20
68°
42°
21
67°
42°
22
67°
43°
23
73°
44°
24
75°
46°
25
71°
49°
26
66°
44°
27
64°
43°
28
64°
42°
29
65°
40°
30
64°
45°
1
63°
44°
2
63°
42°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Carson
Carson's September 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 40° and 56°. The average high for September is 71° with an average low of 47°. 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 Carson. See also: October | November | December.