S
M
T
W
T
F
S
26
77°
54°
27
75°
50°
28
63°
48°
29
59°
41°
30
63°
39°
1
62°
38°
2
61°
44°
3
72°
48°
4
79°
47°
5
58°
40°
6
54°
37°
7
60°
41°
8
71°
47°
9
69°
46°
10
68°
49°
11
70°
51°
12
71°
48°
13
68°
48°
14
71°
47°
15
65°
49°
16
66°
50°
17
67°
53°
18
72°
54°
19
73°
55°
20
75°
55°
21
76°
56°
22
76°
50°
23
67°
46°
24
66°
49°
25
67°
51°
26
70°
54°
27
70°
52°
28
69°
50°
29
70°
49°
30
77°
58°
31
72°
55°
1
73°
60°
2
81°
56°
3
74°
54°
4
72°
52°
5
73°
51°
6
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mystic
Mystic's May 2026 forecast shows daily high temperatures ranging from 54° to 81°, with overnight lows between 37° and 60°. The average high for May is 70° with an average low of 50°. 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 Mystic. See also: June | July | August.
