S
M
T
W
T
F
S
26
96°
82°
27
98°
83°
28
96°
78°
29
98°
80°
30
92°
77°
31
91°
76°
1
89°
80°
2
87°
77°
3
91°
77°
4
90°
76°
5
92°
77°
6
90°
77°
7
91°
76°
8
90°
77°
9
92°
78°
10
91°
78°
11
91°
76°
12
90°
77°
13
89°
75°
14
90°
76°
15
87°
73°
16
87°
73°
17
88°
78°
18
89°
77°
19
91°
78°
20
92°
78°
21
90°
77°
22
88°
77°
23
88°
76°
24
89°
77°
25
89°
78°
26
90°
78°
27
90°
77°
28
91°
78°
29
90°
76°
30
91°
77°
31
91°
77°
1
89°
76°
2
91°
77°
3
90°
77°
4
87°
76°
5
87°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Walton Beach
Fort Walton Beach's August 2026 forecast shows daily high temperatures ranging from 87° to 92°, with overnight lows between 73° and 80°. The average high for August is 90° with an average low of 77°. 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 Fort Walton Beach. See also: September | October | November.