S
M
T
W
T
F
S
29
55°
34°
30
57°
34°
1
62°
42°
2
61°
42°
3
55°
41°
4
55°
37°
5
56°
34°
6
56°
39°
7
57°
37°
8
56°
38°
9
61°
37°
10
62°
38°
11
63°
37°
12
62°
36°
13
62°
39°
14
61°
41°
15
56°
37°
16
55°
41°
17
Hist. Avg.
55°
35°
18
Hist. Avg.
55°
35°
19
Hist. Avg.
55°
35°
20
Hist. Avg.
55°
35°
21
Hist. Avg.
54°
35°
22
Hist. Avg.
54°
35°
23
Hist. Avg.
54°
35°
24
Hist. Avg.
54°
35°
25
Hist. Avg.
54°
35°
26
Hist. Avg.
54°
34°
27
Hist. Avg.
54°
34°
28
Hist. Avg.
54°
34°
29
Hist. Avg.
54°
34°
30
Hist. Avg.
54°
34°
31
Hist. Avg.
54°
34°
1
Hist. Avg.
54°
35°
2
Hist. Avg.
54°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Chico
Chico's December 2026 forecast shows daily high temperatures ranging from 55° to 63°, with overnight lows between 34° and 42°. The average high for December is 58° 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 Chico. See also: January | February | March.