S
M
T
W
T
F
S
26
51°
41°
27
55°
45°
28
51°
43°
29
49°
43°
30
56°
46°
1
59°
46°
2
55°
47°
3
52°
42°
4
59°
41°
5
59°
51°
6
63°
54°
7
60°
47°
8
59°
41°
9
61°
44°
10
61°
51°
11
59°
44°
12
57°
43°
13
59°
50°
14
56°
48°
15
51°
48°
16
67°
55°
17
74°
51°
18
61°
53°
19
69°
59°
20
72°
56°
21
64°
49°
22
60°
50°
23
61°
49°
24
65°
53°
25
66°
54°
26
69°
55°
27
67°
52°
28
60°
50°
29
60°
51°
30
61°
55°
31
62°
55°
1
62°
54°
2
63°
54°
3
62°
53°
4
62°
51°
5
63°
56°
6
64°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Eastham
Eastham's May 2026 forecast shows daily high temperatures ranging from 51° to 74°, with overnight lows between 48° and 59°. The average high for May is 63° 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 Eastham. See also: June | July | August.