S
M
T
W
T
F
S
26
89°
70°
27
82°
68°
28
82°
72°
29
84°
68°
30
90°
70°
1
90°
70°
2
93°
71°
3
75°
69°
4
78°
71°
5
81°
72°
6
86°
71°
7
93°
69°
8
84°
69°
9
90°
73°
10
90°
74°
11
91°
73°
12
86°
71°
13
91°
75°
14
83°
72°
15
84°
73°
16
85°
74°
17
84°
77°
18
82°
75°
19
83°
78°
20
84°
77°
21
84°
73°
22
N/A
23
90°
74°
24
89°
76°
25
91°
75°
26
89°
76°
27
88°
74°
28
85°
73°
29
86°
75°
30
84°
76°
31
85°
74°
1
85°
73°
2
83°
74°
3
86°
73°
4
85°
74°
5
84°
73°
6
84°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Port St. Lucie
Port St. Lucie's May 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 73° and 76°. The average high for May is 86° 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 May weather will actually feel in Port St. Lucie. See also: June | July | August.
