S
M
T
W
T
F
S
26
61°
39°
27
70°
39°
28
68°
41°
29
64°
43°
30
54°
46°
1
63°
41°
2
59°
46°
3
55°
41°
4
68°
45°
5
73°
52°
6
66°
55°
7
64°
45°
8
61°
45°
9
64°
46°
10
66°
52°
11
63°
50°
12
66°
43°
13
66°
48°
14
64°
52°
15
68°
48°
16
75°
48°
17
86°
61°
18
86°
61°
19
N/A
20
92°
57°
21
67°
47°
22
67°
48°
23
57°
48°
24
62°
53°
25
66°
56°
26
76°
56°
27
77°
58°
28
77°
55°
29
73°
56°
30
77°
57°
31
77°
58°
1
79°
55°
2
68°
54°
3
68°
55°
4
69°
59°
5
71°
59°
6
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Lyme
Lyme's May 2026 forecast shows daily high temperatures ranging from 57° to 92°, with overnight lows between 47° and 59°. The average high for May is 72° 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 Lyme. See also: June | July | August.