S
M
T
W
T
F
S
26
85°
73°
27
85°
75°
28
84°
75°
29
84°
74°
30
85°
75°
1
86°
75°
2
85°
74°
3
83°
76°
4
84°
76°
5
86°
75°
6
86°
75°
7
85°
74°
8
82°
73°
9
82°
74°
10
83°
75°
11
85°
76°
12
83°
75°
13
83°
76°
14
84°
76°
15
83°
75°
16
83°
76°
17
84°
76°
18
83°
77°
19
83°
77°
20
84°
76°
21
83°
75°
22
84°
76°
23
84°
75°
24
85°
75°
25
86°
76°
26
87°
75°
27
87°
74°
28
86°
77°
29
85°
76°
30
86°
75°
31
87°
75°
1
87°
76°
2
86°
76°
3
88°
77°
4
88°
76°
5
87°
76°
6
87°
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 73° and 77°. The average high for May is 85° with an average low of 75°. 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.