S
M
T
W
T
F
S
29
56°
45°
30
62°
44°
1
60°
45°
2
61°
45°
3
61°
43°
4
49°
41°
5
57°
43°
6
55°
43°
7
58°
39°
8
50°
37°
9
48°
36°
10
47°
35°
11
47°
35°
12
46°
36°
13
47°
32°
14
48°
29°
15
45°
35°
16
48°
41°
17
59°
40°
18
58°
41°
19
57°
34°
20
56°
25°
21
52°
27°
22
43°
29°
23
46°
39°
24
53°
32°
25
59°
30°
26
45°
29°
27
46°
31°
28
44°
32°
29
46°
36°
30
50°
40°
31
58°
31°
1
59°
25°
2
47°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Suffolk
Suffolk's December 2026 forecast shows daily high temperatures ranging from 43° to 62°, with overnight lows between 21° and 45°. The average high for December is 52° with an average low of 36°. 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 Suffolk. See also: January | February | March.