S
M
T
W
T
F
S
28
88°
77°
29
88°
78°
30
89°
78°
1
90°
77°
2
89°
78°
3
89°
78°
4
90°
77°
5
89°
78°
6
88°
78°
7
89°
77°
8
88°
78°
9
89°
77°
10
91°
76°
11
92°
75°
12
89°
76°
13
90°
75°
14
89°
76°
15
90°
77°
16
89°
77°
17
90°
76°
18
90°
75°
19
91°
75°
20
89°
76°
21
90°
75°
22
90°
75°
23
91°
76°
24
90°
75°
25
90°
76°
26
91°
76°
27
92°
77°
28
92°
76°
29
91°
76°
30
90°
77°
31
91°
76°
1
90°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Keys
Keys's July 2026 forecast shows daily high temperatures ranging from 88° to 92°, with overnight lows between 75° and 78°. The average high for July is 90° 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 July weather will actually feel in Keys. See also: August | September | October.