S
M
T
W
T
F
S
29
50°
37°
30
61°
37°
1
58°
39°
2
59°
37°
3
60°
32°
4
47°
28°
5
56°
32°
6
56°
34°
7
49°
30°
8
45°
29°
9
45°
26°
10
44°
24°
11
42°
23°
12
43°
22°
13
43°
22°
14
43°
18°
15
43°
23°
16
44°
29°
17
46°
30°
18
50°
32°
19
53°
22°
20
51°
16°
21
45°
16°
22
39°
19°
23
43°
25°
24
42°
18°
25
43°
18°
26
40°
19°
27
40°
17°
28
41°
17°
29
41°
20°
30
43°
28°
31
54°
20°
1
55°
16°
2
40°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Harmony
Harmony's December 2026 forecast shows daily high temperatures ranging from 39° to 61°, with overnight lows between 13° and 39°. The average high for December is 47° with an average low of 25°. 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 Harmony. See also: January | February | March.
