S
M
T
W
T
F
S
29
50°
42°
30
54°
44°
1
55°
45°
2
54°
43°
3
57°
42°
4
50°
40°
5
53°
36°
6
53°
41°
7
54°
39°
8
46°
35°
9
44°
32°
10
42°
31°
11
41°
37°
12
43°
36°
13
45°
33°
14
41°
29°
15
44°
31°
16
42°
35°
17
45°
36°
18
43°
38°
19
51°
34°
20
48°
24°
21
42°
26°
22
38°
28°
23
35°
32°
24
40°
31°
25
50°
30°
26
49°
25°
27
40°
25°
28
36°
26°
29
38°
25°
30
40°
35°
31
48°
31°
1
53°
24°
2
46°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Millbourne
Millbourne's December 2026 forecast shows daily high temperatures ranging from 35° to 57°, with overnight lows between 22° and 45°. The average high for December is 46° 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 Millbourne. See also: January | February | March.
