S
M
T
W
T
F
S
29
36°
21°
30
36°
28°
1
40°
23°
2
39°
23°
3
36°
28°
4
48°
20°
5
48°
22°
6
34°
20°
7
34°
22°
8
35°
19°
9
33°
17°
10
31°
17°
11
29°
18°
12
30°
16°
13
30°
17°
14
32°
17°
15
31°
23°
16
32°
23°
17
35°
20°
18
35°
26°
19
36°
26°
20
34°
23°
21
33°
21°
22
31°
18°
23
31°
14°
24
30°
17°
25
28°
21°
26
30°
22°
27
29°
22°
28
33°
20°
29
31°
16°
30
Hist. Avg.
32°
14°
31
Hist. Avg.
31°
13°
1
Hist. Avg.
31°
13°
2
Hist. Avg.
31°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Wilton
Wilton's December 2026 forecast shows daily high temperatures ranging from 28° to 48°, with overnight lows between 14° and 28°. The average high for December is 34° 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 Wilton. See also: January | February | March.
