S
M
T
W
T
F
S
29
65°
51°
30
63°
51°
1
63°
47°
2
64°
44°
3
64°
51°
4
63°
48°
5
62°
43°
6
63°
49°
7
66°
49°
8
67°
48°
9
69°
50°
10
69°
50°
11
67°
49°
12
62°
47°
13
65°
48°
14
68°
50°
15
69°
50°
16
69°
49°
17
68°
50°
18
66°
51°
19
64°
51°
20
63°
49°
21
64°
47°
22
69°
43°
23
65°
49°
24
66°
47°
25
64°
44°
26
62°
45°
27
66°
44°
28
68°
44°
29
67°
45°
30
66°
46°
31
66°
43°
1
62°
43°
2
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Montecito
Montecito's December 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 43° and 51°. The average high for December is 65° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Montecito. See also: January | February | March.
