S
M
T
W
T
F
S
26
89°
81°
27
88°
81°
28
89°
80°
29
88°
81°
30
90°
81°
31
91°
80°
1
91°
81°
2
90°
81°
3
90°
80°
4
89°
81°
5
90°
81°
6
90°
80°
7
91°
81°
8
90°
81°
9
89°
80°
10
91°
79°
11
91°
80°
12
91°
79°
13
90°
75°
14
89°
79°
15
90°
78°
16
89°
78°
17
90°
77°
18
91°
79°
19
91°
78°
20
90°
78°
21
90°
77°
22
91°
79°
23
91°
77°
24
90°
79°
25
89°
76°
26
88°
76°
27
90°
77°
28
89°
77°
29
89°
79°
30
90°
78°
31
91°
79°
1
91°
78°
2
88°
76°
3
89°
78°
4
88°
79°
5
89°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Key Largo Park
Key Largo Park's August 2026 forecast shows daily high temperatures ranging from 88° to 91°, with overnight lows between 75° and 81°. The average high for August is 90° 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 August weather will actually feel in Key Largo Park. See also: September | October | November.