S
M
T
W
T
F
S
30
86°
63°
31
88°
63°
1
89°
64°
2
90°
65°
3
89°
66°
4
88°
62°
5
88°
64°
6
87°
65°
7
89°
60°
8
85°
64°
9
88°
64°
10
88°
63°
11
86°
64°
12
88°
64°
13
88°
59°
14
82°
57°
15
82°
57°
16
83°
58°
17
82°
62°
18
86°
61°
19
86°
61°
20
84°
62°
21
80°
61°
22
84°
60°
23
84°
61°
24
85°
54°
25
79°
53°
26
81°
58°
27
83°
58°
28
Hist. Avg.
81°
58°
29
Hist. Avg.
80°
57°
30
Hist. Avg.
80°
57°
1
Hist. Avg.
80°
56°
2
Hist. Avg.
79°
56°
3
Hist. Avg.
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in South Gate
South Gate's September 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 53° and 66°. The average high for September is 85° with an average low of 61°. 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 South Gate. See also: October | November | December.