S
M
T
W
T
F
S
30
76°
58°
31
73°
60°
1
77°
60°
2
78°
59°
3
77°
57°
4
74°
55°
5
73°
54°
6
72°
55°
7
72°
53°
8
70°
54°
9
71°
54°
10
74°
55°
11
76°
57°
12
77°
56°
13
78°
56°
14
78°
53°
15
76°
52°
16
74°
55°
17
74°
58°
18
77°
58°
19
78°
57°
20
78°
59°
21
77°
58°
22
74°
57°
23
74°
53°
24
72°
52°
25
71°
51°
26
69°
52°
27
70°
54°
28
74°
51°
29
74°
52°
30
76°
54°
1
Hist. Avg.
74°
54°
2
Hist. Avg.
74°
54°
3
Hist. Avg.
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Goleta
Goleta's September 2026 forecast shows daily high temperatures ranging from 69° to 78°, with overnight lows between 51° and 60°. The average high for September is 75° with an average low of 55°. 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 Goleta. See also: October | November | December.