S
M
T
W
T
F
S
26
54°
39°
27
55°
37°
28
62°
38°
29
55°
35°
30
57°
42°
1
61°
42°
2
58°
38°
3
62°
42°
4
67°
47°
5
68°
46°
6
67°
48°
7
70°
49°
8
71°
50°
9
71°
47°
10
64°
44°
11
60°
43°
12
61°
44°
13
63°
48°
14
62°
45°
15
66°
45°
16
68°
51°
17
72°
50°
18
68°
40°
19
65°
40°
20
63°
41°
21
64°
40°
22
64°
41°
23
65°
44°
24
64°
49°
25
67°
50°
26
71°
47°
27
68°
45°
28
67°
55°
29
67°
53°
30
80°
46°
31
69°
53°
1
70°
48°
2
72°
52°
3
72°
57°
4
79°
49°
5
77°
48°
6
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Alto
Alto's May 2026 forecast shows daily high temperatures ranging from 54° to 80°, with overnight lows between 35° and 57°. The average high for May is 66° with an average low of 46°. 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 Alto. See also: June | July | August.
