S
M
T
W
T
F
S
26
65°
32°
27
68°
34°
28
60°
35°
29
53°
44°
30
48°
45°
1
64°
37°
2
50°
35°
3
53°
35°
4
68°
33°
5
69°
49°
6
62°
53°
7
65°
40°
8
60°
36°
9
59°
33°
10
61°
50°
11
63°
42°
12
61°
37°
13
54°
35°
14
66°
49°
15
62°
51°
16
73°
50°
17
86°
53°
18
67°
49°
19
91°
50°
20
91°
63°
21
68°
45°
22
69°
36°
23
69°
40°
24
59°
46°
25
76°
52°
26
80°
51°
27
86°
56°
28
71°
51°
29
65°
46°
30
54°
41°
31
60°
48°
1
61°
45°
2
65°
47°
3
65°
49°
4
72°
52°
5
76°
56°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in West Boothbay Harbor
West Boothbay Harbor's May 2026 forecast shows daily high temperatures ranging from 54° to 76°, with overnight lows between 41° and 56°. The average high for May is 66° with an average low of 49°. 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 West Boothbay Harbor. See also: June | July | August.