S
M
T
W
T
F
S
26
64°
43°
27
59°
48°
28
57°
43°
29
63°
41°
30
68°
43°
1
64°
45°
2
61°
43°
3
55°
50°
4
59°
46°
5
55°
45°
6
55°
43°
7
59°
43°
8
61°
46°
9
63°
45°
10
59°
41°
11
54°
43°
12
55°
43°
13
52°
45°
14
55°
43°
15
52°
43°
16
52°
41°
17
57°
46°
18
59°
45°
19
59°
50°
20
61°
52°
21
66°
54°
22
75°
57°
23
68°
48°
24
75°
51°
25
85°
57°
26
79°
55°
27
76°
54°
28
75°
56°
29
70°
53°
30
73°
55°
31
72°
56°
1
71°
55°
2
67°
51°
3
65°
51°
4
66°
52°
5
63°
48°
6
63°
45°
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 63° to 85°, with overnight lows between 45° and 57°. The average high for May is 71° with an average low of 52°. 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.