S
M
T
W
T
F
S
29
44°
32°
30
42°
31°
1
42°
30°
2
41°
30°
3
42°
33°
4
44°
34°
5
45°
34°
6
44°
38°
7
43°
38°
8
45°
37°
9
44°
30°
10
40°
29°
11
51°
33°
12
49°
36°
13
44°
33°
14
50°
31°
15
44°
26°
16
40°
25°
17
38°
30°
18
39°
33°
19
44°
32°
20
45°
34°
21
45°
34°
22
48°
33°
23
49°
35°
24
48°
37°
25
51°
27°
26
51°
27°
27
50°
25°
28
36°
26°
29
37°
32°
30
46°
31°
31
45°
33°
1
47°
35°
2
49°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Stonington
Stonington's December 2026 forecast shows daily high temperatures ranging from 36° to 51°, with overnight lows between 25° and 38°. The average high for December is 45° with an average low of 32°. 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 Stonington. See also: January | February | March.
