S
M
T
W
T
F
S
29
76°
71°
30
79°
71°
31
79°
71°
1
79°
70°
2
79°
70°
3
81°
72°
4
82°
69°
5
84°
69°
6
83°
67°
7
78°
68°
8
76°
68°
9
77°
68°
10
79°
69°
11
77°
68°
12
77°
71°
13
79°
71°
14
80°
71°
15
80°
70°
16
81°
70°
17
82°
67°
18
87°
68°
19
89°
71°
20
80°
68°
21
78°
68°
22
78°
67°
23
78°
64°
24
79°
67°
25
80°
68°
26
85°
69°
27
84°
69°
28
83°
70°
29
84°
69°
30
85°
69°
1
84°
68°
2
80°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Port St. Lucie
Port St. Lucie's April 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 64° and 71°. The average high for April is 82° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Port St. Lucie. See also: May | June | July.