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