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