S
M
T
W
T
F
S
29
42°
27°
30
45°
29°
1
44°
28°
2
42°
28°
3
45°
26°
4
43°
25°
5
43°
25°
6
40°
27°
7
43°
25°
8
37°
24°
9
34°
24°
10
35°
23°
11
35°
24°
12
36°
21°
13
36°
17°
14
37°
12°
15
32°
13°
16
28°
15°
17
30°
13°
18
29°
20°
19
33°
19°
20
36°
19°
21
34°
14°
22
33°
15°
23
31°
6°
24
30°
14°
25
27°
12°
26
30°
6°
27
27°
4°
28
22°
5°
29
26°
4°
30
24°
9°
31
26°
18°
1
37°
15°
2
37°
8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Danbury
Danbury's December 2026 forecast shows daily high temperatures ranging from 22° to 45°, with overnight lows between 4° and 29°. The average high for December is 35° with an average low of 18°. 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 Danbury. See also: January | February | March.
