S
M
T
W
T
F
S
26
90°
80°
27
89°
80°
28
90°
79°
29
89°
80°
30
90°
79°
31
91°
80°
1
90°
78°
2
90°
78°
3
91°
78°
4
90°
78°
5
90°
78°
6
Hist. Avg.
91°
73°
7
Hist. Avg.
91°
73°
8
Hist. Avg.
91°
73°
9
Hist. Avg.
91°
73°
10
Hist. Avg.
90°
73°
11
Hist. Avg.
90°
73°
12
Hist. Avg.
90°
73°
13
Hist. Avg.
90°
73°
14
Hist. Avg.
90°
73°
15
Hist. Avg.
90°
73°
16
Hist. Avg.
90°
73°
17
Hist. Avg.
90°
73°
18
Hist. Avg.
90°
73°
19
Hist. Avg.
90°
73°
20
Hist. Avg.
90°
73°
21
Hist. Avg.
90°
73°
22
Hist. Avg.
90°
73°
23
Hist. Avg.
90°
73°
24
Hist. Avg.
90°
73°
25
Hist. Avg.
90°
73°
26
Hist. Avg.
90°
73°
27
Hist. Avg.
90°
73°
28
Hist. Avg.
90°
73°
29
Hist. Avg.
90°
74°
30
Hist. Avg.
90°
74°
31
Hist. Avg.
90°
74°
1
Hist. Avg.
90°
73°
2
Hist. Avg.
90°
73°
3
Hist. Avg.
90°
73°
4
Hist. Avg.
90°
74°
5
Hist. Avg.
90°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Key Largo
Key Largo's August 2026 forecast shows daily high temperatures ranging from 89° to 91°, with overnight lows between 78° and 80°. 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. See also: September | October | November.
