S
M
T
W
T
F
S
30
86°
75°
31
88°
75°
1
89°
76°
2
87°
75°
3
89°
75°
4
92°
75°
5
94°
74°
6
91°
74°
7
89°
73°
8
88°
72°
9
90°
75°
10
91°
75°
11
90°
75°
12
90°
74°
13
91°
72°
14
89°
72°
15
90°
75°
16
88°
75°
17
89°
79°
18
87°
72°
19
87°
71°
20
87°
72°
21
86°
73°
22
87°
73°
23
87°
74°
24
88°
74°
25
85°
74°
26
84°
67°
27
86°
63°
28
88°
64°
29
88°
67°
30
86°
71°
1
86°
71°
2
85°
77°
3
88°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Pierce
Fort Pierce's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Fort Pierce. See also: October | November | December.
