Port St. Lucie, FL Weather & Growing Conditions
This Afternoon
89°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 89, with temperatures falling to around 83 in the afternoon. East northeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 89°F | Chance Showers And Thunderstorms | 5 mph ENE | 52% |
| Tonight | 72°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph NE | 47% |
| Sunday | 89°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph N | 68% |
| Sunday Night | 71°F | Showers And Thunderstorms Likely | 0 to 5 mph NE | 59% |
| Monday | 89°F | Showers And Thunderstorms Likely | 0 to 5 mph NNE | 74% |
| Monday Night | 72°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 74% |
| Tuesday | 89°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 74% |
| Tuesday Night | 72°F | Showers And Thunderstorms Likely | 0 to 5 mph ESE | 74% |
| Wednesday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph ENE | 82% |
| Wednesday Night | 73°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph NE | 82% |
| Thursday | 88°F | Showers And Thunderstorms Likely | 5 to 10 mph NNE | 63% |
| Thursday Night | 73°F | Showers And Thunderstorms Likely | 0 to 10 mph NNE | 63% |
| Friday | 88°F | Showers And Thunderstorms Likely | 5 to 10 mph NNE | 62% |
| Friday Night | 72°F | Showers And Thunderstorms Likely | 0 to 10 mph NNE | 62% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port St. Lucie, FL
Last spring frost
Jan 22
First fall frost
Jan 12
Growing season
365 days
Hardiness zone
10a
Explore more for Port St. Lucie, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, Ft Pierce, Fl (13.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.