Harman US

Port St. Lucie, FL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Port St. Lucie, a city in St. Lucie County, Florida.

This Afternoon
89°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then showers and thunderstorms likely. Partly sunny. High near 89, with temperatures falling to around 83 in the afternoon. East northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Port St. Lucie

WhenTempForecastWindPrecip
This Afternoon 89°F Chance Showers And Thunderstorms 5 mph ENE 61%
Tonight 73°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 0 to 5 mph E 58%
Sunday 88°F Partly Sunny then Slight Chance Showers And Thunderstorms 0 to 5 mph NE 70%
Sunday Night 72°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 0 to 5 mph ENE 59%
Monday 88°F Chance Showers And Thunderstorms 0 to 5 mph NE 70%
Monday Night 72°F Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms 0 to 5 mph ESE 70%
Tuesday 89°F Chance Showers And Thunderstorms 0 to 5 mph SSE 70%
Tuesday Night 73°F Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms 0 to 5 mph E 70%
Wednesday 89°F Chance Showers And Thunderstorms 0 to 5 mph ESE 80%
Wednesday Night 73°F Showers And Thunderstorms then Chance Showers And Thunderstorms 0 to 5 mph NNE 80%
Thursday 89°F Showers And Thunderstorms Likely 0 to 5 mph NNE 66%
Thursday Night 73°F Showers And Thunderstorms Likely 0 to 5 mph NNE 66%
Friday 89°F Chance Showers And Thunderstorms 0 to 10 mph NNE 63%
Friday Night 73°F Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms 0 to 5 mph NE 63%

Forecast source: National Weather Service (api.weather.gov) for Port St. Lucie (27.281, -80.388). Updated through the day.

Growing snapshot for Port St. Lucie

Last spring frost
Jan 23
First fall frost
Jan 18
Growing season
365 days
Hardiness zone
10a

More local growing data for Port St. Lucie: nearby ZIP 34953 weather · frost dates · planting calendar · Florida frost dates

Nearby towns & communities

All Florida locations ›

Climate data from the nearest NOAA station, Stuart, Fl (9.7 mi from Port St. Lucie). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.