S
M
T
W
T
F
S
29
50°
41°
30
50°
41°
1
49°
40°
2
48°
41°
3
49°
39°
4
50°
40°
5
49°
39°
6
50°
37°
7
50°
38°
8
43°
36°
9
43°
34°
10
44°
37°
11
43°
39°
12
48°
39°
13
48°
38°
14
47°
38°
15
48°
33°
16
45°
33°
17
42°
39°
18
48°
37°
19
47°
38°
20
46°
37°
21
46°
33°
22
42°
38°
23
48°
39°
24
49°
39°
25
49°
37°
26
48°
32°
27
48°
32°
28
42°
33°
29
42°
32°
30
44°
32°
31
43°
33°
1
42°
32°
2
43°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Sheffield
Sheffield's December 2026 forecast shows daily high temperatures ranging from 42° to 50°, with overnight lows between 32° and 41°. The average high for December is 46° with an average low of 37°. 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 Sheffield. See also: January | February | March.