S
M
T
W
T
F
S
26
61°
31°
27
63°
34°
28
57°
32°
29
44°
39°
30
46°
41°
1
59°
36°
2
53°
43°
3
46°
40°
4
53°
43°
5
54°
49°
6
51°
47°
7
53°
45°
8
52°
40°
9
54°
39°
10
55°
43°
11
55°
44°
12
54°
42°
13
56°
43°
14
57°
43°
15
59°
44°
16
64°
48°
17
63°
47°
18
58°
49°
19
64°
49°
20
62°
48°
21
58°
49°
22
60°
50°
23
59°
48°
24
58°
47°
25
59°
48°
26
59°
50°
27
60°
49°
28
60°
48°
29
61°
47°
30
60°
50°
31
61°
52°
1
62°
50°
2
63°
48°
3
62°
53°
4
65°
53°
5
63°
52°
6
63°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Stonington
Stonington's May 2026 forecast shows daily high temperatures ranging from 46° to 65°, with overnight lows between 39° and 54°. The average high for May is 58° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Stonington. See also: June | July | August.
