S
M
T
W
T
F
S
30
82°
61°
31
76°
58°
1
77°
54°
2
80°
53°
3
77°
57°
4
77°
58°
5
79°
59°
6
76°
61°
7
84°
62°
8
86°
65°
9
96°
66°
10
87°
70°
11
82°
67°
12
81°
63°
13
81°
60°
14
79°
61°
15
76°
64°
16
74°
63°
17
75°
61°
18
78°
63°
19
80°
64°
20
81°
63°
21
78°
64°
22
79°
65°
23
79°
64°
24
77°
65°
25
79°
63°
26
77°
59°
27
79°
62°
28
77°
60°
29
79°
62°
30
75°
60°
1
73°
60°
2
73°
61°
3
74°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Santa Barbara
Santa Barbara's September 2026 forecast shows daily high temperatures ranging from 73° to 81°, with overnight lows between 59° and 65°. The average high for September is 77° with an average low of 62°. 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 Santa Barbara. See also: October | November | December.
