S
M
T
W
T
F
S
26
92°
76°
27
88°
75°
28
88°
75°
29
91°
74°
30
92°
75°
31
91°
75°
1
92°
74°
2
91°
75°
3
90°
75°
4
89°
74°
5
91°
75°
6
92°
75°
7
90°
74°
8
90°
74°
9
89°
75°
10
90°
75°
11
91°
76°
12
89°
75°
13
89°
75°
14
90°
74°
15
88°
75°
16
87°
75°
17
87°
74°
18
88°
75°
19
87°
75°
20
87°
74°
21
88°
75°
22
87°
75°
23
88°
76°
24
90°
73°
25
89°
73°
26
89°
73°
27
90°
74°
28
89°
73°
29
90°
74°
30
90°
73°
31
91°
74°
1
91°
74°
2
90°
73°
3
89°
74°
4
89°
74°
5
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Pierce
Fort Pierce's August 2026 forecast shows daily high temperatures ranging from 87° to 92°, with overnight lows between 73° and 76°. The average high for August is 90° with an average low of 74°. 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 Pierce. See also: September | October | November.