S
M
T
W
T
F
S
26
90°
67°
27
82°
66°
28
82°
64°
29
84°
64°
30
90°
67°
1
90°
67°
2
93°
68°
3
74°
69°
4
79°
70°
5
81°
72°
6
86°
64°
7
93°
62°
8
86°
62°
9
92°
70°
10
92°
71°
11
92°
71°
12
86°
72°
13
92°
73°
14
85°
70°
15
85°
72°
16
87°
70°
17
85°
75°
18
84°
72°
19
84°
76°
20
85°
73°
21
86°
70°
22
87°
72°
23
88°
72°
24
88°
79°
25
88°
78°
26
88°
79°
27
89°
78°
28
88°
74°
29
88°
73°
30
91°
74°
31
86°
73°
1
87°
73°
2
90°
72°
3
83°
71°
4
84°
69°
5
85°
70°
6
86°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Pierce South
Fort Pierce South's May 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 69° and 73°. The average high for May is 86° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Fort Pierce South. See also: June | July | August.