S
M
T
W
T
F
S
29
44°
29°
30
47°
32°
1
48°
31°
2
46°
32°
3
48°
30°
4
46°
29°
5
46°
29°
6
43°
30°
7
46°
29°
8
40°
27°
9
37°
27°
10
37°
25°
11
38°
27°
12
37°
25°
13
37°
20°
14
39°
16°
15
34°
17°
16
31°
20°
17
33°
18°
18
32°
24°
19
36°
23°
20
40°
21°
21
36°
18°
22
33°
18°
23
31°
13°
24
33°
20°
25
32°
15°
26
37°
10°
27
30°
10°
28
25°
11°
29
29°
9°
30
27°
13°
31
29°
22°
1
41°
17°
2
39°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fitzwilliam
Fitzwilliam's December 2026 forecast shows daily high temperatures ranging from 25° to 48°, with overnight lows between 9° and 32°. The average high for December is 37° with an average low of 21°. 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 Fitzwilliam. See also: January | February | March.
