S
M
T
W
T
F
S
30
76°
62°
31
79°
61°
1
77°
62°
2
77°
60°
3
78°
60°
4
77°
57°
5
75°
57°
6
76°
56°
7
75°
57°
8
76°
58°
9
77°
58°
10
76°
60°
11
79°
60°
12
76°
57°
13
75°
63°
14
80°
64°
15
Hist. Avg.
74°
56°
16
Hist. Avg.
74°
56°
17
Hist. Avg.
74°
56°
18
Hist. Avg.
74°
56°
19
Hist. Avg.
74°
55°
20
Hist. Avg.
74°
55°
21
Hist. Avg.
74°
55°
22
Hist. Avg.
74°
55°
23
Hist. Avg.
74°
55°
24
Hist. Avg.
74°
55°
25
Hist. Avg.
74°
55°
26
Hist. Avg.
74°
54°
27
Hist. Avg.
74°
54°
28
Hist. Avg.
74°
54°
29
Hist. Avg.
74°
54°
30
Hist. Avg.
74°
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
*Temporarily Unavailable
September Weather in Montecito
Montecito's September 2026 forecast shows daily high temperatures ranging from 75° to 80°, with overnight lows between 56° and 64°. The average high for September is 77° with an average low of 60°. 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 Montecito. See also: October | November | December.
