S
M
T
W
T
F
S
26
48°
28°
27
53°
26°
28
45°
26°
29
42°
32°
30
43°
34°
1
45°
38°
2
54°
33°
3
44°
33°
4
55°
34°
5
73°
42°
6
70°
47°
7
55°
45°
8
57°
38°
9
55°
38°
10
58°
41°
11
52°
43°
12
49°
36°
13
54°
36°
14
62°
43°
15
46°
40°
16
66°
40°
17
72°
43°
18
54°
36°
19
63°
36°
20
70°
42°
21
53°
30°
22
50°
30°
23
50°
31°
24
69°
31°
25
64°
47°
26
55°
41°
27
45°
41°
28
45°
39°
29
47°
38°
30
51°
37°
31
53°
38°
1
58°
39°
2
62°
41°
3
67°
44°
4
68°
44°
5
69°
44°
6
71°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Iona
Iona's May 2026 forecast shows daily high temperatures ranging from 45° to 71°, with overnight lows between 37° and 47°. The average high for May is 58° with an average low of 41°. 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 Iona. See also: June | July | August.
