S
M
T
W
T
F
S
26
91°
81°
27
89°
76°
28
89°
83°
29
90°
84°
30
90°
84°
31
92°
82°
1
93°
82°
2
90°
85°
3
93°
76°
4
92°
80°
5
89°
82°
6
90°
82°
7
91°
83°
8
90°
82°
9
89°
81°
10
90°
82°
11
91°
81°
12
92°
80°
13
91°
82°
14
92°
82°
15
90°
80°
16
91°
80°
17
90°
77°
18
88°
80°
19
89°
79°
20
88°
79°
21
88°
80°
22
89°
81°
23
88°
80°
24
88°
80°
25
89°
79°
26
87°
80°
27
87°
81°
28
88°
80°
29
88°
79°
30
87°
80°
31
86°
80°
1
87°
79°
2
86°
80°
3
86°
79°
4
87°
78°
5
86°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cudjoe Key
Cudjoe Key's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 77° and 83°. The average high for August is 89° with an average low of 80°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Cudjoe Key. See also: September | October | November.