S
M
T
W
T
F
S
26
92°
78°
27
94°
79°
28
91°
77°
29
93°
77°
30
93°
81°
31
94°
80°
1
94°
79°
2
93°
79°
3
92°
77°
4
95°
77°
5
93°
73°
6
90°
73°
7
93°
74°
8
94°
77°
9
94°
76°
10
96°
77°
11
96°
79°
12
96°
78°
13
94°
76°
14
94°
78°
15
96°
76°
16
95°
75°
17
95°
79°
18
94°
77°
19
95°
80°
20
96°
79°
21
94°
75°
22
94°
79°
23
94°
78°
24
94°
76°
25
95°
78°
26
N/A
27
90°
75°
28
93°
75°
29
92°
75°
30
93°
76°
31
91°
74°
1
91°
75°
2
92°
74°
3
91°
76°
4
92°
75°
5
90°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Dismal Key
Dismal Key's August 2026 forecast shows daily high temperatures ranging from 90° to 93°, with overnight lows between 74° and 76°. The average high for August is 92° with an average low of 75°. 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 Dismal Key. See also: September | October | November.
