S
M
T
W
T
F
S
29
41°
27°
30
43°
29°
1
42°
28°
2
41°
29°
3
44°
26°
4
42°
26°
5
41°
25°
6
40°
27°
7
41°
24°
8
34°
24°
9
32°
23°
10
35°
24°
11
36°
24°
12
34°
21°
13
36°
16°
14
34°
14°
15
30°
13°
16
27°
14°
17
29°
13°
18
29°
20°
19
30°
19°
20
34°
18°
21
34°
17°
22
32°
16°
23
32°
4°
24
29°
13°
25
24°
14°
26
25°
4°
27
25°
1°
28
23°
5°
29
24°
4°
30
24°
11°
31
26°
16°
1
34°
14°
2
34°
9°
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 23° to 44°, with overnight lows between 1° and 29°. The average high for December is 33° with an average low of 17°. 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.
