S
M
T
W
T
F
S
29
46°
26°
30
46°
27°
1
47°
27°
2
46°
29°
3
46°
33°
4
47°
35°
5
46°
39°
6
46°
39°
7
49°
36°
8
45°
35°
9
46°
29°
10
45°
26°
11
58°
43°
12
60°
33°
13
62°
27°
14
58°
26°
15
45°
27°
16
46°
24°
17
44°
27°
18
48°
38°
19
52°
40°
20
57°
40°
21
58°
37°
22
58°
37°
23
57°
39°
24
58°
35°
25
61°
30°
26
60°
24°
27
44°
26°
28
49°
33°
29
52°
37°
30
56°
38°
31
57°
40°
1
58°
39°
2
58°
34°
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 44° to 62°, with overnight lows between 24° and 43°. The average high for December is 52° 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 Danbury. See also: January | February | March.