Port St. Lucie, FL Weather & Growing Conditions
Today
91°F
Partly Sunny then Showers And Thunderstorms Likely
Showers and thunderstorms likely between noon and 3pm, then showers and thunderstorms between 3pm and 4pm, then showers and thunderstorms likely between 4pm and 5pm, then showers and thunderstorms. Partly sunny. High near 91, with temperatures falling to around 84 in the afternoon. South wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Partly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph S | 79% |
| Tonight | 74°F | Showers And Thunderstorms Likely then Mostly Cloudy | 0 to 5 mph SE | 70% |
| Wednesday | 90°F | Showers And Thunderstorms Likely | 0 to 10 mph E | 63% |
| Wednesday Night | 76°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 50% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 53% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 53% |
| Friday | 90°F | Showers And Thunderstorms Likely | 5 to 15 mph E | 67% |
| Friday Night | 75°F | Showers And Thunderstorms Likely | 0 to 10 mph ESE | 67% |
| Saturday | 91°F | Showers And Thunderstorms Likely | 5 to 10 mph ESE | 66% |
| Saturday Night | 76°F | Showers And Thunderstorms Likely | 0 to 10 mph ESE | 66% |
| Sunday | 92°F | Chance Showers And Thunderstorms | 0 to 10 mph ESE | 43% |
| Sunday Night | 76°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph ESE | 43% |
| Monday | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph ESE | 38% |
| Monday Night | 76°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph ESE | 38% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port St. Lucie, FL
Last spring frost
Jan 23
First fall frost
Jan 18
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, Stuart, Fl (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.