S
M
T
W
T
F
S
30
76°
61°
31
75°
62°
1
76°
62°
2
76°
61°
3
75°
61°
4
75°
62°
5
76°
61°
6
76°
62°
7
78°
63°
8
77°
62°
9
77°
61°
10
78°
63°
11
76°
61°
12
77°
62°
13
78°
64°
14
79°
68°
15
81°
66°
16
83°
67°
17
81°
68°
18
84°
69°
19
84°
69°
20
85°
68°
21
85°
68°
22
81°
67°
23
77°
66°
24
82°
63°
25
81°
65°
26
80°
66°
27
81°
66°
28
82°
67°
29
82°
65°
30
83°
66°
1
82°
68°
2
81°
67°
3
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Compton
Compton's September 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 61° and 69°. The average high for September is 79° with an average low of 65°. 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 Compton. See also: October | November | December.