S
M
T
W
T
F
S
30
82°
61°
31
76°
58°
1
76°
56°
2
79°
59°
3
76°
58°
4
74°
59°
5
75°
59°
6
81°
65°
7
80°
66°
8
81°
65°
9
77°
66°
10
78°
66°
11
81°
64°
12
80°
64°
13
77°
63°
14
78°
60°
15
81°
64°
16
80°
63°
17
81°
63°
18
78°
62°
19
75°
62°
20
79°
63°
21
80°
62°
22
80°
63°
23
79°
63°
24
77°
57°
25
72°
56°
26
72°
57°
27
71°
55°
28
73°
58°
29
76°
60°
30
75°
59°
1
73°
59°
2
77°
60°
3
79°
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 71° to 81°, with overnight lows between 55° and 66°. The average high for September is 77° 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 Santa Barbara. See also: October | November | December.
