S
M
T
W
T
F
S
29
45°
34°
30
48°
35°
1
47°
34°
2
48°
33°
3
47°
32°
4
42°
31°
5
46°
32°
6
46°
32°
7
39°
27°
8
35°
26°
9
35°
26°
10
34°
25°
11
35°
30°
12
36°
30°
13
35°
29°
14
33°
21°
15
35°
22°
16
33°
23°
17
35°
28°
18
36°
27°
19
41°
23°
20
35°
17°
21
34°
19°
22
33°
21°
23
29°
21°
24
34°
20°
25
31°
21°
26
30°
12°
27
29°
10°
28
28°
7°
29
28°
8°
30
27°
20°
31
33°
21°
1
36°
14°
2
30°
15°
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 27° to 48°, with overnight lows between 7° and 35°. The average high for December is 36° 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 Sheffield. See also: January | February | March.