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
72°
57°
20
85°
59°
21
66°
51°
22
65°
50°
23
58°
48°
24
56°
49°
25
67°
56°
26
68°
56°
27
72°
58°
28
73°
54°
29
69°
54°
30
66°
48°
31
69°
53°
1
69°
52°
2
68°
53°
3
69°
55°
4
68°
58°
5
74°
59°
6
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Groton Town
Groton Town's May 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 48° and 59°. The average high for May is 70° with an average low of 55°. 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 Groton Town. See also: June | July | August.
