S
M
T
W
T
F
S
26
50°
34°
27
59°
36°
28
59°
34°
29
61°
36°
30
54°
37°
1
66°
32°
2
73°
30°
3
73°
43°
4
79°
36°
5
46°
36°
6
50°
36°
7
73°
36°
8
73°
48°
9
77°
45°
10
70°
48°
11
88°
50°
12
79°
54°
13
84°
46°
14
90°
52°
15
88°
46°
16
84°
50°
17
75°
45°
18
48°
35°
19
61°
44°
20
57°
43°
21
63°
44°
22
70°
47°
23
78°
52°
24
81°
50°
25
80°
53°
26
82°
55°
27
72°
51°
28
73°
51°
29
76°
52°
30
78°
49°
31
80°
55°
1
76°
55°
2
74°
54°
3
72°
48°
4
75°
55°
5
80°
56°
6
82°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Idalia
Idalia's May 2026 forecast shows daily high temperatures ranging from 48° to 82°, with overnight lows between 35° and 56°. The average high for May is 73° with an average low of 50°. 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 Idalia. See also: June | July | August.