S
M
T
W
T
F
S
26
38°
33°
27
40°
27°
28
40°
35°
29
41°
34°
30
39°
32°
1
38°
35°
2
44°
43°
3
49°
40°
4
43°
35°
5
41°
35°
6
44°
35°
7
41°
34°
8
39°
37°
9
45°
39°
10
40°
37°
11
41°
38°
12
40°
38°
13
40°
37°
14
41°
38°
15
40°
38°
16
40°
39°
17
41°
38°
18
40°
36°
19
39°
37°
20
40°
38°
21
40°
39°
22
41°
38°
23
40°
39°
24
41°
40°
25
40°
40°
26
42°
39°
27
42°
40°
28
41°
40°
29
41°
39°
30
42°
40°
31
41°
40°
1
41°
39°
2
42°
40°
3
41°
41°
4
42°
41°
5
42°
40°
6
43°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Attu
Attu's May 2026 forecast shows daily high temperatures ranging from 38° to 49°, with overnight lows between 27° and 43°. The average high for May is 41° 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 Attu. See also: June | July | August.