S
M
T
W
T
F
S
29
45°
30°
30
48°
32°
1
47°
31°
2
47°
32°
3
49°
30°
4
47°
29°
5
47°
29°
6
44°
30°
7
47°
29°
8
41°
27°
9
38°
28°
10
38°
26°
11
39°
27°
12
38°
25°
13
39°
21°
14
40°
17°
15
35°
17°
16
32°
20°
17
34°
19°
18
33°
25°
19
38°
24°
20
41°
22°
21
37°
19°
22
34°
19°
23
33°
14°
24
34°
22°
25
33°
16°
26
38°
11°
27
31°
12°
28
27°
12°
29
31°
11°
30
29°
14°
31
30°
24°
1
42°
19°
2
41°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Wilton
Wilton's December 2026 forecast shows daily high temperatures ranging from 27° to 49°, with overnight lows between 11° and 32°. The average high for December is 38° with an average low of 22°. 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.
