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.
Today
85°F
Mostly Sunny
Mostly sunny. High near 85, with temperatures falling to around 80 in the afternoon. East wind 5 to 10 mph.
7-day forecast for Port St. Lucie
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph E | 8% |
| Tonight | 70°F | Partly Cloudy | 0 to 5 mph ENE | 6% |
| Thursday | 85°F | Sunny | 0 to 10 mph NE | 3% |
| Thursday Night | 69°F | Mostly Clear | 0 to 5 mph NNE | 1% |
| Friday | 85°F | Sunny | 0 to 5 mph N | 12% |
| Friday Night | 67°F | Partly Cloudy | 0 mph | 12% |
| Saturday | 85°F | Sunny | 0 to 5 mph NNW | 5% |
| Saturday Night | 66°F | Slight Chance Rain Showers | 0 to 5 mph N | 15% |
| Sunday | 83°F | Sunny | 5 mph N | 7% |
| Sunday Night | 64°F | Partly Cloudy | 0 to 5 mph N | 7% |
| Monday | 78°F | Mostly Sunny | 5 to 10 mph NNE | 14% |
| Monday Night | 64°F | Mostly Cloudy | 5 mph NNE | 14% |
| Tuesday | 79°F | Slight Chance Rain Showers | 5 to 10 mph NNE | 18% |
| Tuesday Night | 64°F | Slight Chance Rain Showers | 0 to 5 mph N | 18% |
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 Nov 4, 2026.