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