S
M
T
W
T
F
S
26
64°
29°
27
69°
30°
28
60°
29°
29
53°
43°
30
49°
43°
1
60°
30°
2
53°
30°
3
54°
31°
4
72°
32°
5
82°
51°
6
65°
47°
7
63°
38°
8
57°
38°
9
54°
45°
10
63°
47°
11
54°
40°
12
57°
38°
13
54°
44°
14
59°
45°
15
62°
47°
16
57°
43°
17
58°
44°
18
57°
46°
19
63°
44°
20
57°
42°
21
58°
41°
22
58°
41°
23
59°
44°
24
59°
48°
25
62°
49°
26
66°
50°
27
66°
45°
28
60°
43°
29
60°
46°
30
63°
47°
31
68°
51°
1
69°
52°
2
64°
51°
3
65°
51°
4
70°
52°
5
69°
53°
6
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Kennebunk
Kennebunk's May 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 38° and 53°. The average high for May is 61° with an average low of 46°. 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 Kennebunk. See also: June | July | August.