S
M
T
W
T
F
S
26
53°
38°
27
66°
37°
28
60°
38°
29
55°
43°
30
52°
46°
1
58°
43°
2
52°
44°
3
57°
37°
4
62°
36°
5
63°
48°
6
62°
52°
7
65°
45°
8
61°
45°
9
57°
47°
10
60°
51°
11
62°
44°
12
60°
44°
13
59°
48°
14
56°
49°
15
62°
47°
16
67°
42°
17
74°
56°
18
73°
55°
19
N/A
20
88°
58°
21
62°
48°
22
64°
49°
23
56°
51°
24
63°
55°
25
68°
58°
26
75°
59°
27
73°
58°
28
76°
57°
29
74°
57°
30
76°
58°
31
74°
58°
1
75°
59°
2
76°
55°
3
75°
60°
4
77°
61°
5
77°
61°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Old Lyme Shores
Old Lyme Shores's May 2026 forecast shows daily high temperatures ranging from 56° to 88°, with overnight lows between 48° and 61°. The average high for May is 73° with an average low of 57°. 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 Old Lyme Shores. See also: June | July | August.