S
M
T
W
T
F
S
26
54°
40°
27
48°
39°
28
53°
35°
29
59°
36°
30
59°
37°
1
65°
29°
2
70°
35°
3
75°
38°
4
60°
40°
5
57°
31°
6
50°
31°
7
63°
43°
8
71°
42°
9
65°
37°
10
65°
38°
11
71°
37°
12
72°
39°
13
76°
41°
14
77°
44°
15
77°
44°
16
74°
41°
17
65°
37°
18
69°
41°
19
59°
32°
20
65°
35°
21
67°
37°
22
70°
43°
23
70°
42°
24
62°
39°
25
65°
39°
26
70°
43°
27
70°
44°
28
61°
40°
29
62°
38°
30
62°
40°
31
63°
39°
1
64°
40°
2
67°
41°
3
69°
45°
4
67°
43°
5
69°
43°
6
75°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Altonah
Altonah's May 2026 forecast shows daily high temperatures ranging from 50° to 77°, with overnight lows between 31° and 47°. The average high for May is 67° with an average low of 40°. 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 Altonah. See also: June | July | August.
