S
M
T
W
T
F
S
26
45°
36°
27
40°
33°
28
41°
36°
29
47°
37°
30
49°
38°
1
44°
39°
2
46°
36°
3
38°
32°
4
36°
33°
5
39°
33°
6
42°
37°
7
44°
35°
8
42°
35°
9
41°
34°
10
44°
38°
11
46°
40°
12
47°
37°
13
45°
38°
14
46°
38°
15
45°
37°
16
44°
36°
17
44°
38°
18
43°
38°
19
44°
40°
20
44°
39°
21
45°
40°
22
45°
40°
23
44°
39°
24
45°
38°
25
45°
38°
26
44°
37°
27
44°
38°
28
45°
40°
29
46°
41°
30
45°
40°
31
46°
39°
1
46°
41°
2
47°
40°
3
46°
42°
4
47°
43°
5
47°
43°
6
48°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Unalaska
Unalaska's May 2026 forecast shows daily high temperatures ranging from 36° to 48°, with overnight lows between 32° and 43°. The average high for May is 44° 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 Unalaska. See also: June | July | August.
