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