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