S
M
T
W
T
F
S
28
90°
81°
29
91°
78°
30
92°
77°
1
91°
78°
2
89°
74°
3
91°
78°
4
91°
77°
5
92°
75°
6
91°
79°
7
94°
80°
8
95°
80°
9
94°
81°
10
94°
82°
11
92°
79°
12
95°
81°
13
94°
79°
14
93°
78°
15
93°
78°
16
95°
79°
17
93°
79°
18
93°
80°
19
94°
78°
20
91°
79°
21
92°
79°
22
91°
78°
23
90°
79°
24
90°
79°
25
92°
78°
26
92°
79°
27
90°
79°
28
90°
78°
29
89°
79°
30
89°
79°
31
90°
78°
1
91°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Caribbean Key
Caribbean Key's July 2026 forecast shows daily high temperatures ranging from 89° to 95°, with overnight lows between 78° and 82°. The average high for July is 92° with an average low of 79°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Caribbean Key. See also: August | September | October.