S
M
T
W
T
F
S
29
57°
41°
30
58°
49°
1
58°
41°
2
57°
44°
3
56°
45°
4
60°
46°
5
60°
40°
6
56°
44°
7
55°
40°
8
54°
46°
9
53°
45°
10
56°
44°
11
61°
47°
12
62°
44°
13
57°
42°
14
60°
43°
15
61°
44°
16
60°
45°
17
60°
46°
18
61°
48°
19
62°
48°
20
61°
41°
21
55°
43°
22
56°
42°
23
57°
45°
24
56°
42°
25
55°
42°
26
57°
45°
27
61°
44°
28
61°
43°
29
60°
44°
30
Hist. Avg.
58°
43°
31
Hist. Avg.
58°
43°
1
Hist. Avg.
58°
43°
2
Hist. Avg.
58°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Berkeley
Berkeley's December 2026 forecast shows daily high temperatures ranging from 53° to 62°, with overnight lows between 40° 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 Berkeley. See also: January | February | March.