S
M
T
W
T
F
S
29
48°
34°
30
47°
32°
1
48°
32°
2
45°
31°
3
47°
29°
4
45°
32°
5
44°
35°
6
51°
39°
7
55°
41°
8
57°
38°
9
58°
34°
10
49°
32°
11
47°
35°
12
47°
33°
13
48°
35°
14
47°
30°
15
53°
28°
16
44°
29°
17
42°
28°
18
42°
29°
19
43°
33°
20
45°
38°
21
52°
34°
22
54°
33°
23
50°
37°
24
52°
36°
25
55°
35°
26
51°
31°
27
47°
30°
28
51°
27°
29
50°
32°
30
43°
20°
31
53°
19°
1
37°
23°
2
40°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Avalon
Avalon's December 2026 forecast shows daily high temperatures ranging from 37° to 58°, with overnight lows between 19° and 41°. The average high for December is 48° with an average low of 32°. 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 Avalon. See also: January | February | March.