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
62°
48°
24
56°
50°
25
63°
47°
26
67°
54°
27
65°
51°
28
58°
47°
29
61°
48°
30
62°
44°
31
60°
50°
1
65°
49°
2
63°
49°
3
64°
53°
4
69°
51°
5
67°
50°
6
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boothbay Harbor Town
Boothbay Harbor Town's May 2026 forecast shows daily high temperatures ranging from 56° to 69°, with overnight lows between 44° and 54°. The average high for May is 63° 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 Boothbay Harbor Town. See also: June | July | August.