S
M
T
W
T
F
S
26
84°
74°
27
85°
76°
28
84°
77°
29
85°
76°
30
85°
75°
1
84°
74°
2
81°
76°
3
82°
76°
4
82°
77°
5
84°
76°
6
85°
77°
7
85°
77°
8
84°
76°
9
83°
77°
10
83°
77°
11
84°
76°
12
84°
77°
13
83°
77°
14
83°
76°
15
84°
77°
16
84°
77°
17
83°
78°
18
83°
78°
19
84°
77°
20
83°
76°
21
83°
77°
22
84°
78°
23
84°
78°
24
85°
77°
25
84°
76°
26
84°
76°
27
85°
77°
28
84°
78°
29
86°
78°
30
85°
77°
31
85°
78°
1
87°
76°
2
86°
76°
3
87°
77°
4
86°
78°
5
86°
77°
6
87°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Islamorada
Islamorada's May 2026 forecast shows daily high temperatures ranging from 81° to 87°, with overnight lows between 74° and 78°. The average high for May is 84° with an average low of 77°. 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 Islamorada. See also: June | July | August.
