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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Fort Pierce
Fort Pierce North
Fort Pierce South
Indian River Estates
Lakewood Park
River Park
St. Lucie Village
White City
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.