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