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