S
M
T
W
T
F
S
26
53°
37°
27
63°
36°
28
59°
36°
29
58°
45°
30
54°
46°
1
60°
48°
2
56°
42°
3
56°
36°
4
64°
45°
5
61°
48°
6
63°
53°
7
60°
47°
8
60°
35°
9
61°
41°
10
63°
49°
11
60°
39°
12
59°
33°
13
60°
44°
14
57°
50°
15
62°
42°
16
66°
36°
17
81°
58°
18
73°
51°
19
69°
57°
20
69°
56°
21
60°
47°
22
61°
48°
23
57°
51°
24
58°
50°
25
61°
54°
26
64°
54°
27
67°
53°
28
65°
54°
29
64°
55°
30
66°
54°
31
65°
55°
1
66°
51°
2
65°
51°
3
65°
53°
4
66°
56°
5
67°
56°
6
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chilmark
Chilmark's May 2026 forecast shows daily high temperatures ranging from 57° to 72°, with overnight lows between 47° and 57°. The average high for May is 65° with an average low of 53°. 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 Chilmark. See also: June | July | August.