S
M
T
W
T
F
S
29
75°
37°
30
74°
36°
1
63°
34°
2
63°
36°
3
61°
45°
4
64°
47°
5
70°
47°
6
73°
45°
7
70°
46°
8
71°
40°
9
70°
36°
10
61°
35°
11
60°
34°
12
59°
33°
13
61°
32°
14
60°
33°
15
60°
34°
16
57°
34°
17
Hist. Avg.
62°
40°
18
Hist. Avg.
62°
40°
19
Hist. Avg.
61°
40°
20
Hist. Avg.
61°
40°
21
Hist. Avg.
61°
39°
22
Hist. Avg.
61°
39°
23
Hist. Avg.
61°
39°
24
Hist. Avg.
60°
39°
25
Hist. Avg.
60°
39°
26
Hist. Avg.
60°
38°
27
Hist. Avg.
60°
38°
28
Hist. Avg.
60°
38°
29
Hist. Avg.
60°
38°
30
Hist. Avg.
60°
38°
31
Hist. Avg.
60°
38°
1
Hist. Avg.
60°
38°
2
Hist. Avg.
60°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Seacliff
Seacliff's December 2026 forecast shows daily high temperatures ranging from 57° to 75°, with overnight lows between 32° and 47°. The average high for December is 65° with an average low of 38°. 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 Seacliff. See also: January | February | March.
