S
M
T
W
T
F
S
26
61°
39°
27
70°
39°
28
68°
41°
29
64°
43°
30
N/A
1
62°
46°
2
55°
45°
3
60°
43°
4
62°
49°
5
65°
53°
6
62°
50°
7
60°
43°
8
56°
42°
9
61°
47°
10
65°
49°
11
66°
48°
12
65°
50°
13
65°
51°
14
64°
49°
15
62°
52°
16
63°
51°
17
62°
49°
18
63°
55°
19
65°
55°
20
66°
54°
21
65°
55°
22
71°
51°
23
63°
52°
24
65°
55°
25
67°
52°
26
66°
54°
27
65°
53°
28
66°
57°
29
69°
58°
30
71°
57°
31
68°
56°
1
68°
52°
2
67°
52°
3
67°
53°
4
68°
52°
5
67°
53°
6
68°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Old Saybrook
Old Saybrook's May 2026 forecast shows daily high temperatures ranging from 55° to 71°, with overnight lows between 42° and 58°. The average high for May is 65° with an average low of 51°. 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 Saybrook. See also: June | July | August.
