S
M
T
W
T
F
S
26
85°
75°
27
85°
75°
28
86°
74°
29
85°
75°
30
84°
74°
1
86°
76°
2
85°
75°
3
86°
74°
4
84°
76°
5
86°
73°
6
85°
76°
7
84°
75°
8
84°
76°
9
85°
76°
10
85°
75°
11
86°
77°
12
84°
77°
13
83°
76°
14
84°
77°
15
84°
77°
16
86°
76°
17
85°
76°
18
83°
77°
19
83°
77°
20
85°
76°
21
84°
77°
22
85°
77°
23
84°
76°
24
84°
78°
25
85°
77°
26
84°
77°
27
84°
78°
28
85°
78°
29
85°
77°
30
86°
77°
31
85°
76°
1
83°
76°
2
83°
75°
3
84°
76°
4
83°
75°
5
87°
76°
6
86°
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 83° to 87°, with overnight lows between 73° 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.