S
M
T
W
T
F
S
29
64°
49°
30
63°
49°
1
63°
48°
2
58°
49°
3
58°
49°
4
59°
48°
5
61°
49°
6
61°
50°
7
61°
46°
8
61°
47°
9
62°
43°
10
60°
44°
11
60°
47°
12
58°
46°
13
59°
47°
14
60°
48°
15
60°
44°
16
59°
46°
17
58°
45°
18
58°
47°
19
56°
46°
20
60°
46°
21
60°
45°
22
59°
46°
23
58°
47°
24
58°
48°
25
60°
48°
26
61°
47°
27
61°
47°
28
60°
46°
29
61°
45°
30
60°
46°
31
61°
45°
1
62°
46°
2
62°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Monterey
Monterey's December 2026 forecast shows daily high temperatures ranging from 56° to 64°, with overnight lows between 43° and 50°. The average high for December is 60° 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 Monterey. See also: January | February | March.
