S
M
T
W
T
F
S
29
46°
40°
30
47°
39°
1
48°
39°
2
46°
37°
3
45°
35°
4
50°
37°
5
47°
38°
6
47°
38°
7
48°
37°
8
47°
39°
9
48°
39°
10
48°
38°
11
47°
36°
12
47°
32°
13
45°
32°
14
42°
34°
15
41°
39°
16
47°
37°
17
48°
38°
18
48°
38°
19
47°
34°
20
47°
34°
21
42°
35°
22
44°
33°
23
43°
35°
24
45°
32°
25
43°
31°
26
42°
33°
27
42°
35°
28
43°
32°
29
43°
37°
30
48°
33°
31
45°
32°
1
46°
31°
2
42°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Scunthorpe
Scunthorpe's December 2026 forecast shows daily high temperatures ranging from 41° to 50°, with overnight lows between 30° and 40°. The average high for December is 46° with an average low of 35°. 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 Scunthorpe. See also: January | February | March.