S
M
T
W
T
F
S
29
62°
41°
30
63°
44°
1
66°
50°
2
70°
51°
3
69°
51°
4
68°
52°
5
69°
49°
6
71°
50°
7
69°
43°
8
59°
38°
9
59°
39°
10
58°
37°
11
57°
36°
12
57°
36°
13
58°
41°
14
61°
48°
15
68°
47°
16
65°
42°
17
57°
41°
18
61°
41°
19
65°
44°
20
65°
47°
21
61°
34°
22
56°
47°
23
64°
42°
24
72°
33°
25
66°
30°
26
55°
34°
27
55°
42°
28
62°
48°
29
67°
41°
30
71°
33°
31
65°
41°
1
58°
39°
2
62°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Bristol
Bristol's December 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 30° and 52°. The average high for December is 63° 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 Bristol. See also: January | February | March.