S
M
T
W
T
F
S
29
51°
39°
30
50°
36°
1
49°
34°
2
44°
38°
3
45°
35°
4
46°
39°
5
47°
39°
6
49°
38°
7
48°
38°
8
48°
37°
9
46°
39°
10
50°
38°
11
47°
38°
12
48°
37°
13
48°
36°
14
47°
37°
15
48°
38°
16
49°
39°
17
Hist. Avg.
45°
38°
18
Hist. Avg.
45°
38°
19
Hist. Avg.
45°
38°
20
Hist. Avg.
45°
38°
21
Hist. Avg.
45°
38°
22
Hist. Avg.
44°
38°
23
Hist. Avg.
44°
38°
24
Hist. Avg.
44°
38°
25
Hist. Avg.
44°
37°
26
Hist. Avg.
44°
37°
27
Hist. Avg.
44°
37°
28
Hist. Avg.
44°
37°
29
Hist. Avg.
44°
37°
30
Hist. Avg.
44°
37°
31
Hist. Avg.
44°
37°
1
Hist. Avg.
43°
36°
2
Hist. Avg.
43°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Middlesbrough
Middlesbrough's December 2026 forecast shows daily high temperatures ranging from 44° to 51°, with overnight lows between 34° and 39°. The average high for December is 48° with an average low of 38°. 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 Middlesbrough. See also: January | February | March.