S
M
T
W
T
F
S
29
54°
34°
30
52°
30°
1
54°
31°
2
54°
29°
3
56°
28°
4
51°
29°
5
53°
35°
6
59°
44°
7
63°
38°
8
65°
30°
9
62°
31°
10
55°
30°
11
56°
37°
12
56°
39°
13
53°
34°
14
57°
28°
15
52°
28°
16
50°
29°
17
51°
31°
18
52°
39°
19
55°
41°
20
56°
44°
21
63°
44°
22
64°
43°
23
63°
40°
24
65°
37°
25
62°
38°
26
62°
39°
27
59°
30°
28
60°
33°
29
51°
28°
30
56°
24°
31
57°
23°
1
44°
25°
2
48°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in McDonough
McDonough's December 2026 forecast shows daily high temperatures ranging from 44° to 65°, with overnight lows between 23° and 44°. The average high for December is 56° 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 McDonough. See also: January | February | March.
