S
M
T
W
T
F
S
29
47°
27°
30
40°
23°
1
38°
24°
2
37°
28°
3
37°
21°
4
38°
17°
5
36°
22°
6
35°
21°
7
35°
19°
8
34°
16°
9
34°
14°
10
31°
13°
11
30°
22°
12
42°
20°
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 Fitzwilliam
Fitzwilliam's December 2026 forecast shows daily high temperatures ranging from 30° to 47°, with overnight lows between 13° and 28°. 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.
