S
M
T
W
T
F
S
29
48°
37°
30
54°
32°
1
50°
32°
2
42°
34°
3
46°
35°
4
48°
36°
5
49°
41°
6
52°
43°
7
52°
45°
8
56°
41°
9
56°
40°
10
53°
40°
11
50°
32°
12
47°
32°
13
40°
33°
14
43°
32°
15
41°
28°
16
40°
26°
17
38°
26°
18
36°
27°
19
38°
26°
20
37°
29°
21
40°
36°
22
44°
38°
23
51°
34°
24
49°
30°
25
43°
22°
26
39°
21°
27
36°
32°
28
36°
25°
29
44°
21°
30
36°
20°
31
32°
24°
1
34°
31°
2
40°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Downtown Brooklyn
Downtown Brooklyn's December 2026 forecast shows daily high temperatures ranging from 32° to 56°, with overnight lows between 20° and 45°. The average high for December is 44° with an average low of 32°. 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 Downtown Brooklyn. See also: January | February | March.