S
M
T
W
T
F
S
29
57°
44°
30
57°
43°
1
56°
44°
2
55°
43°
3
55°
44°
4
59°
44°
5
58°
42°
6
58°
41°
7
56°
43°
8
58°
42°
9
54°
42°
10
52°
41°
11
51°
34°
12
54°
34°
13
51°
38°
14
57°
41°
15
59°
43°
16
58°
42°
17
57°
34°
18
51°
41°
19
49°
42°
20
53°
40°
21
55°
34°
22
54°
32°
23
48°
34°
24
49°
39°
25
50°
39°
26
49°
38°
27
49°
35°
28
48°
33°
29
47°
33°
30
47°
31°
31
48°
32°
1
47°
34°
2
48°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Colusa
Colusa's December 2026 forecast shows daily high temperatures ranging from 47° to 59°, with overnight lows between 31° and 44°. The average high for December is 53° with an average low of 39°. 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 Colusa. See also: January | February | March.
