S
M
T
W
T
F
S
30
90°
78°
31
90°
78°
1
89°
77°
2
88°
78°
3
88°
77°
4
87°
77°
5
87°
76°
6
88°
78°
7
88°
78°
8
87°
77°
9
86°
77°
10
86°
76°
11
87°
78°
12
88°
76°
13
88°
78°
14
90°
76°
15
91°
76°
16
90°
76°
17
91°
75°
18
90°
76°
19
91°
74°
20
91°
75°
21
89°
75°
22
88°
76°
23
89°
75°
24
90°
73°
25
90°
74°
26
89°
74°
27
88°
73°
28
87°
74°
29
87°
75°
30
88°
75°
1
88°
74°
2
89°
74°
3
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Golden Gate
Golden Gate's September 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 73° and 78°. The average high for September is 89° with an average low of 76°. 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 Golden Gate. See also: October | November | December.