S
M
T
W
T
F
S
29
52°
32°
30
44°
29°
1
43°
31°
2
43°
37°
3
49°
38°
4
55°
34°
5
52°
33°
6
45°
33°
7
48°
34°
8
49°
36°
9
50°
31°
10
50°
35°
11
50°
37°
12
Hist. Avg.
44°
28°
13
Hist. Avg.
43°
28°
14
Hist. Avg.
43°
27°
15
Hist. Avg.
42°
27°
16
Hist. Avg.
42°
27°
17
Hist. Avg.
42°
26°
18
Hist. Avg.
42°
26°
19
Hist. Avg.
41°
26°
20
Hist. Avg.
41°
25°
21
Hist. Avg.
41°
25°
22
Hist. Avg.
41°
25°
23
Hist. Avg.
40°
24°
24
Hist. Avg.
40°
24°
25
Hist. Avg.
40°
24°
26
Hist. Avg.
40°
24°
27
Hist. Avg.
39°
23°
28
Hist. Avg.
39°
23°
29
Hist. Avg.
39°
23°
30
Hist. Avg.
39°
23°
31
Hist. Avg.
39°
22°
1
Hist. Avg.
38°
22°
2
Hist. Avg.
38°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Stonington
Stonington's December 2026 forecast shows daily high temperatures ranging from 43° to 55°, with overnight lows between 29° and 38°. The average high for December is 48° with an average low of 34°. 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.
