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
62°
40°
19
64°
38°
20
67°
40°
21
67°
43°
22
68°
44°
23
67°
45°
24
70°
45°
25
67°
50°
26
68°
51°
27
72°
48°
28
70°
48°
29
69°
49°
30
72°
45°
31
76°
46°
1
81°
50°
2
80°
52°
3
79°
49°
4
80°
48°
5
79°
48°
6
79°
47°
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 67° to 81°, 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.