S
M
T
W
T
F
S
26
78°
56°
27
72°
55°
28
77°
54°
29
79°
56°
30
79°
57°
31
78°
57°
1
75°
56°
2
79°
54°
3
75°
55°
4
77°
55°
5
75°
52°
6
73°
54°
7
76°
54°
8
79°
55°
9
80°
56°
10
79°
55°
11
76°
52°
12
71°
52°
13
70°
47°
14
72°
49°
15
77°
44°
16
68°
42°
17
67°
42°
18
68°
45°
19
70°
50°
20
75°
51°
21
77°
53°
22
78°
53°
23
79°
40°
24
77°
39°
25
67°
40°
26
63°
45°
27
69°
47°
28
75°
51°
29
75°
51°
30
77°
40°
31
68°
42°
1
67°
49°
2
69°
50°
3
73°
42°
4
67°
46°
5
65°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in The Key
The Key's August 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 39° and 57°. The average high for August is 74° with an average low of 50°. 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 The Key. See also: September | October | November.
