S
M
T
W
T
F
S
26
61°
31°
27
63°
34°
28
57°
32°
29
44°
39°
30
46°
41°
1
53°
37°
2
46°
42°
3
44°
39°
4
50°
46°
5
50°
45°
6
59°
50°
7
56°
46°
8
54°
41°
9
55°
42°
10
53°
44°
11
56°
39°
12
58°
43°
13
57°
44°
14
58°
45°
15
58°
45°
16
59°
44°
17
58°
45°
18
58°
49°
19
57°
49°
20
62°
48°
21
62°
50°
22
64°
46°
23
59°
48°
24
58°
48°
25
61°
47°
26
62°
46°
27
61°
47°
28
60°
49°
29
60°
51°
30
62°
52°
31
62°
50°
1
63°
46°
2
61°
46°
3
62°
47°
4
62°
48°
5
63°
47°
6
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bass Harbor
Bass Harbor's May 2026 forecast shows daily high temperatures ranging from 44° to 64°, with overnight lows between 37° and 52°. The average high for May is 58° 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 Bass Harbor. See also: June | July | August.
