S
M
T
W
T
F
S
29
65°
47°
30
64°
48°
1
64°
45°
2
63°
48°
3
63°
45°
4
58°
40°
5
57°
44°
6
58°
47°
7
57°
42°
8
58°
43°
9
55°
47°
10
54°
39°
11
55°
38°
12
53°
38°
13
55°
39°
14
54°
38°
15
55°
37°
16
54°
39°
17
56°
39°
18
58°
40°
19
58°
44°
20
59°
41°
21
60°
42°
22
60°
42°
23
59°
38°
24
55°
37°
25
54°
36°
26
54°
36°
27
56°
38°
28
58°
39°
29
61°
41°
30
61°
40°
31
62°
46°
1
61°
47°
2
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Orinda
Orinda's December 2026 forecast shows daily high temperatures ranging from 53° to 65°, with overnight lows between 36° and 48°. The average high for December is 58° with an average low of 42°. 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 Orinda. See also: January | February | March.
