S
M
T
W
T
F
S
26
55°
36°
27
65°
34°
28
66°
35°
29
62°
42°
30
52°
46°
1
59°
43°
2
52°
42°
3
59°
41°
4
62°
48°
5
66°
55°
6
64°
54°
7
60°
47°
8
60°
44°
9
57°
49°
10
61°
50°
11
62°
48°
12
63°
48°
13
62°
50°
14
63°
50°
15
64°
49°
16
68°
55°
17
69°
54°
18
69°
55°
19
68°
54°
20
66°
54°
21
66°
53°
22
67°
53°
23
64°
48°
24
62°
52°
25
64°
50°
26
64°
56°
27
65°
52°
28
64°
52°
29
65°
50°
30
65°
51°
31
66°
57°
1
70°
57°
2
68°
53°
3
67°
58°
4
71°
59°
5
69°
58°
6
68°
59°
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 52° to 71°, with overnight lows between 41° and 59°. The average high for May is 64° with an average low of 52°. 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.
