S
M
T
W
T
F
S
29
57°
44°
30
65°
44°
1
63°
45°
2
63°
44°
3
62°
42°
4
51°
38°
5
59°
41°
6
58°
41°
7
59°
38°
8
52°
37°
9
49°
35°
10
49°
34°
11
48°
32°
12
49°
31°
13
48°
30°
14
48°
27°
15
47°
33°
16
48°
39°
17
60°
38°
18
56°
39°
19
55°
33°
20
56°
24°
21
52°
24°
22
44°
26°
23
47°
36°
24
54°
27°
25
60°
26°
26
45°
27°
27
46°
26°
28
45°
28°
29
46°
34°
30
50°
38°
31
60°
27°
1
60°
23°
2
45°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Middlesex
Middlesex's December 2026 forecast shows daily high temperatures ranging from 44° to 65°, with overnight lows between 20° and 45°. The average high for December is 53° with an average low of 33°. 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 Middlesex. See also: January | February | March.
