S
M
T
W
T
F
S
26
87°
79°
27
85°
75°
28
86°
76°
29
85°
75°
30
86°
74°
1
85°
78°
2
86°
77°
3
86°
77°
4
84°
75°
5
85°
74°
6
87°
76°
7
88°
77°
8
87°
76°
9
87°
75°
10
86°
76°
11
87°
75°
12
84°
76°
13
83°
76°
14
83°
75°
15
84°
76°
16
82°
72°
17
82°
72°
18
83°
74°
19
83°
74°
20
84°
76°
21
84°
76°
22
85°
75°
23
85°
76°
24
84°
77°
25
84°
77°
26
85°
76°
27
84°
77°
28
85°
76°
29
85°
76°
30
84°
77°
31
84°
77°
1
85°
76°
2
84°
78°
3
84°
77°
4
83°
76°
5
84°
78°
6
83°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cudjoe Key
Cudjoe Key's May 2026 forecast shows daily high temperatures ranging from 82° to 88°, with overnight lows between 72° and 78°. The average high for May is 85° with an average low of 76°. 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 Cudjoe Key. See also: June | July | August.