S
M
T
W
T
F
S
26
64°
52°
27
68°
47°
28
74°
47°
29
82°
50°
30
82°
51°
1
81°
54°
2
75°
51°
3
71°
49°
4
64°
52°
5
67°
51°
6
76°
57°
7
81°
58°
8
79°
57°
9
78°
58°
10
85°
60°
11
81°
58°
12
85°
60°
13
86°
60°
14
79°
51°
15
74°
52°
16
75°
52°
17
75°
51°
18
74°
54°
19
74°
49°
20
77°
52°
21
80°
55°
22
84°
57°
23
85°
59°
24
86°
59°
25
86°
58°
26
85°
57°
27
83°
56°
28
80°
55°
29
79°
54°
30
78°
53°
31
78°
53°
1
79°
54°
2
82°
54°
3
84°
57°
4
85°
59°
5
85°
57°
6
81°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ione
Ione's May 2026 forecast shows daily high temperatures ranging from 64° to 86°, with overnight lows between 49° and 60°. The average high for May is 79° with an average low of 55°. 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 Ione. See also: June | July | August.