S
M
T
W
T
F
S
30
66°
57°
31
70°
51°
1
69°
56°
2
72°
57°
3
68°
55°
4
63°
49°
5
68°
56°
6
69°
49°
7
66°
56°
8
69°
54°
9
68°
53°
10
67°
55°
11
66°
52°
12
65°
51°
13
67°
54°
14
65°
56°
15
67°
53°
16
66°
49°
17
66°
54°
18
66°
48°
19
65°
51°
20
66°
49°
21
65°
50°
22
70°
54°
23
65°
51°
24
59°
48°
25
57°
53°
26
61°
48°
27
61°
45°
28
59°
47°
29
60°
51°
30
61°
48°
1
59°
51°
2
64°
55°
3
63°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Montecito
Montecito's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.
