S
M
T
W
T
F
S
26
69°
45°
27
67°
49°
28
62°
50°
29
53°
41°
30
50°
39°
1
47°
39°
2
50°
33°
3
60°
43°
4
77°
51°
5
57°
41°
6
56°
35°
7
58°
42°
8
63°
46°
9
71°
50°
10
57°
39°
11
55°
37°
12
58°
43°
13
64°
48°
14
65°
49°
15
67°
46°
16
65°
45°
17
68°
47°
18
63°
46°
19
69°
51°
20
65°
51°
21
69°
42°
22
63°
42°
23
62°
43°
24
64°
43°
25
63°
44°
26
64°
44°
27
64°
45°
28
65°
44°
29
65°
46°
30
67°
54°
31
73°
52°
1
67°
49°
2
70°
50°
3
72°
56°
4
73°
55°
5
75°
57°
6
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bangor
Bangor's May 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 35° and 58°. The average high for May is 65° with an average low of 47°. 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 Bangor. See also: June | July | August.