S
M
T
W
T
F
S
29
61°
51°
30
64°
51°
1
62°
50°
2
64°
51°
3
62°
49°
4
53°
48°
5
59°
49°
6
62°
48°
7
60°
47°
8
52°
45°
9
51°
44°
10
51°
40°
11
57°
39°
12
50°
39°
13
51°
40°
14
55°
35°
15
47°
42°
16
53°
45°
17
63°
46°
18
61°
45°
19
60°
38°
20
59°
29°
21
58°
31°
22
45°
36°
23
48°
44°
24
60°
33°
25
62°
33°
26
47°
35°
27
48°
39°
28
48°
41°
29
51°
43°
30
55°
44°
31
61°
33°
1
61°
30°
2
51°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Manns Harbor
Manns Harbor's December 2026 forecast shows daily high temperatures ranging from 45° to 64°, with overnight lows between 27° and 51°. The average high for December is 56° with an average low of 41°. 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 Manns Harbor. See also: January | February | March.
