S
M
T
W
T
F
S
26
64°
42°
27
55°
49°
28
59°
42°
29
49°
37°
30
44°
28°
1
44°
28°
2
59°
23°
3
68°
45°
4
67°
41°
5
46°
35°
6
46°
35°
7
50°
33°
8
64°
28°
9
57°
35°
10
55°
28°
11
57°
26°
12
70°
37°
13
60°
37°
14
70°
31°
15
82°
51°
16
80°
48°
17
52°
46°
18
78°
50°
19
64°
45°
20
60°
41°
21
63°
31°
22
66°
45°
23
67°
46°
24
75°
52°
25
78°
55°
26
89°
54°
27
82°
45°
28
78°
45°
29
79°
48°
30
74°
48°
31
72°
50°
1
74°
52°
2
73°
51°
3
72°
53°
4
73°
52°
5
74°
51°
6
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Irma
Irma's May 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 45° and 55°. The average high for May is 76° 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 Irma. See also: June | July | August.