S
M
T
W
T
F
S
26
35°
33°
27
35°
32°
28
34°
32°
29
35°
32°
30
37°
32°
1
37°
34°
2
38°
27°
3
39°
26°
4
42°
27°
5
39°
28°
6
38°
28°
7
35°
25°
8
36°
25°
9
36°
27°
10
42°
29°
11
40°
35°
12
46°
42°
13
51°
40°
14
54°
40°
15
51°
35°
16
42°
29°
17
43°
30°
18
42°
31°
19
43°
33°
20
43°
33°
21
44°
34°
22
45°
31°
23
46°
34°
24
47°
33°
25
45°
34°
26
46°
35°
27
48°
39°
28
48°
38°
29
49°
36°
30
49°
35°
31
48°
36°
1
48°
38°
2
49°
38°
3
50°
35°
4
49°
35°
5
49°
36°
6
50°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chefornak
Chefornak's May 2026 forecast shows daily high temperatures ranging from 35° to 54°, with overnight lows between 25° and 42°. The average high for May is 45° with an average low of 33°. 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 Chefornak. See also: June | July | August.