National Weather Service Forecast for: Port St. Lucie FL
Issued by: National Weather Service Melbourne, FL
Updated: 3:14 pm EST Dec 19, 2025
 
This
Afternoon
This Afternoon: Partly sunny, with a high near 83. West northwest wind around 5 mph.
Partly Sunny
 Tonight

Tonight: Partly cloudy, with a low around 60. Calm wind becoming north around 5 mph after midnight.
Partly Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 79. North wind around 5 mph becoming east northeast in the afternoon.
Mostly Sunny
 Saturday
Night
Saturday Night: Partly cloudy, with a low around 63. Calm wind.
Partly Cloudy
 Sunday

Sunday: Mostly sunny, with a high near 80. Light northeast wind increasing to 5 to 10 mph in the afternoon.
Mostly Sunny
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 64. Northeast wind around 5 mph, with gusts as high as 20 mph.
Partly Cloudy
 Monday

Monday: Partly sunny, with a high near 77. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Partly Sunny
 Monday
Night
Monday Night: A 20 percent chance of showers. Partly cloudy, with a low around 65. East wind around 10 mph, with gusts as high as 25 mph.
Slight Chance
Showers
 Tuesday

Tuesday: Mostly sunny, with a high near 77. East wind 10 to 15 mph, with gusts as high as 20 mph.
Mostly Sunny
Hi 83 °F Lo 60 °F Hi 79 °F Lo 63 °F Hi 80 °F Lo 64 °F Hi 77 °F Lo 65 °F Hi 77 °F

 

This Afternoon
 
 Partly sunny, with a high near 83. West northwest wind around 5 mph.
Tonight
 
 Partly cloudy, with a low around 60. Calm wind becoming north around 5 mph after midnight.
Saturday
 
 Mostly sunny, with a high near 79. North wind around 5 mph becoming east northeast in the afternoon.
Saturday Night
 
 Partly cloudy, with a low around 63. Calm wind.
Sunday
 
 Mostly sunny, with a high near 80. Light northeast wind increasing to 5 to 10 mph in the afternoon.
Sunday Night
 
 Partly cloudy, with a low around 64. Northeast wind around 5 mph, with gusts as high as 20 mph.
Monday
 
 Partly sunny, with a high near 77. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
 
 A 20 percent chance of showers. Partly cloudy, with a low around 65. East wind around 10 mph, with gusts as high as 25 mph.
Tuesday
 
 Mostly sunny, with a high near 77. East wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
 
 Mostly clear, with a low around 61. East northeast wind around 5 mph.
Wednesday
 
 Mostly sunny, with a high near 77. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
 
 Partly cloudy, with a low around 62. East northeast wind around 5 mph becoming calm.
Christmas Day
 
 Mostly sunny, with a high near 77. East northeast wind 5 to 10 mph.

 

Forecast from NOAA-NWS for Port St. Lucie FL.