S
M
T
W
T
F
S
29
60°
30°
30
61°
30°
1
58°
28°
2
58°
26°
3
56°
29°
4
52°
25°
5
49°
22°
6
48°
23°
7
53°
26°
8
56°
24°
9
49°
25°
10
51°
26°
11
47°
22°
12
46°
18°
13
45°
17°
14
46°
18°
15
47°
19°
16
44°
18°
17
44°
16°
18
45°
19°
19
46°
16°
20
47°
19°
21
49°
21°
22
49°
22°
23
52°
18°
24
47°
14°
25
45°
15°
26
42°
17°
27
42°
20°
28
44°
22°
29
46°
17°
30
48°
16°
31
47°
14°
1
47°
14°
2
48°
15°
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 42° to 61°, with overnight lows between 14° and 30°. The average high for December is 49° with an average low of 21°. 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.
