S
M
T
W
T
F
S
29
59°
49°
30
59°
48°
1
60°
48°
2
58°
47°
3
59°
49°
4
62°
49°
5
62°
47°
6
61°
46°
7
60°
48°
8
62°
47°
9
57°
46°
10
57°
47°
11
56°
40°
12
57°
41°
13
56°
43°
14
61°
46°
15
63°
48°
16
62°
47°
17
62°
40°
18
57°
48°
19
55°
47°
20
59°
47°
21
60°
40°
22
59°
39°
23
54°
40°
24
54°
46°
25
56°
47°
26
56°
44°
27
55°
42°
28
54°
40°
29
54°
40°
30
53°
38°
31
54°
39°
1
54°
40°
2
55°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Montara
Montara's December 2026 forecast shows daily high temperatures ranging from 53° to 63°, with overnight lows between 38° and 49°. The average high for December is 58° with an average low of 44°. 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 Montara. See also: January | February | March.