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