S
M
T
W
T
F
S
26
53°
35°
27
58°
29°
28
64°
34°
29
62°
43°
30
64°
37°
1
60°
38°
2
59°
41°
3
62°
44°
4
57°
36°
5
46°
32°
6
54°
32°
7
61°
40°
8
69°
42°
9
74°
47°
10
75°
49°
11
77°
53°
12
76°
53°
13
75°
51°
14
69°
46°
15
69°
44°
16
69°
38°
17
65°
39°
18
61°
48°
19
64°
49°
20
68°
48°
21
71°
50°
22
71°
50°
23
74°
47°
24
75°
45°
25
74°
46°
26
75°
48°
27
77°
47°
28
80°
47°
29
79°
49°
30
80°
51°
31
76°
48°
1
77°
50°
2
79°
51°
3
80°
51°
4
80°
50°
5
79°
52°
6
80°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Summerhaven
Summerhaven's May 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 45° and 52°. The average high for May is 75° with an average low of 49°. 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 Summerhaven. See also: June | July | August.