S
M
T
W
T
F
S
26
57°
45°
27
54°
44°
28
52°
43°
29
53°
40°
30
53°
47°
1
54°
46°
2
55°
44°
3
59°
46°
4
60°
50°
5
61°
47°
6
52°
46°
7
50°
44°
8
56°
42°
9
59°
47°
10
55°
46°
11
55°
41°
12
55°
45°
13
57°
47°
14
53°
41°
15
51°
39°
16
54°
42°
17
51°
40°
18
58°
46°
19
53°
43°
20
51°
39°
21
61°
49°
22
53°
46°
23
44°
32°
24
42°
37°
25
47°
38°
26
48°
36°
27
45°
34°
28
48°
37°
29
49°
36°
30
50°
37°
31
51°
38°
1
53°
42°
2
53°
41°
3
55°
42°
4
54°
42°
5
55°
43°
6
53°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Graham Island
Graham Island's May 2026 forecast shows daily high temperatures ranging from 42° to 55°, with overnight lows between 32° and 43°. The average high for May is 50° with an average low of 38°. 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 Graham Island. See also: June | July | August.