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
39°
34°
4
37°
32°
5
39°
30°
6
43°
26°
7
44°
37°
8
38°
32°
9
39°
32°
10
41°
35°
11
45°
40°
12
44°
39°
13
43°
39°
14
46°
39°
15
45°
38°
16
46°
39°
17
46°
39°
18
47°
40°
19
48°
41°
20
47°
40°
21
46°
39°
22
44°
38°
23
44°
39°
24
45°
38°
25
44°
38°
26
45°
40°
27
45°
41°
28
46°
42°
29
45°
39°
30
46°
38°
31
46°
39°
1
47°
41°
2
46°
41°
3
48°
42°
4
47°
43°
5
47°
42°
6
48°
41°
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 38° to 48°, with overnight lows between 32° and 43°. The average high for May is 45° with an average low of 39°. 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.
