S
M
T
W
T
F
S
29
48°
31°
30
42°
30°
1
42°
34°
2
46°
36°
3
45°
35°
4
46°
33°
5
42°
32°
6
37°
30°
7
36°
29°
8
38°
25°
9
31°
24°
10
31°
23°
11
32°
23°
12
35°
24°
13
37°
25°
14
36°
29°
15
37°
29°
16
40°
28°
17
41°
28°
18
41°
27°
19
38°
24°
20
32°
21°
21
28°
21°
22
34°
14°
23
31°
12°
24
27°
11°
25
26°
10°
26
25°
16°
27
26°
21°
28
39°
25°
29
35°
10°
30
39°
9°
31
24°
7°
1
22°
6°
2
20°
9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Berkeley
Berkeley's December 2026 forecast shows daily high temperatures ranging from 20° to 48°, with overnight lows between 6° and 36°. The average high for December is 35° with an average low of 23°. 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.
