When is the last frost in Port Saint Lucie, FL?

Frost occurs in about 14% of years at the nearest NOAA station (Stuart, FL), so there is no reliable average last frost date.

When is the first frost in Port Saint Lucie, FL?

Frost occurs in about 14% of years at the nearest NOAA station.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 34985Port Saint Lucie, FL

Frost occurs in about 14% of years near Port Saint Lucie, based on NOAA 1991-2020 records for the Stuart, FL station.

Frost occurs in about 14% of years. Frost-tender plants can usually grow year-round, but cover them if a rare cold snap is forecast.

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	Jan 3 · Jan 27 · Feb 17	Dec 28 · Jan 17 · Feb 9	365 days	36%
Frost / freeze (32°F)	Jan 4 · Jan 23 · Feb 10	Jan 1 · Jan 18 · Feb 9	365 days	14%
Hard freeze (28°F)	—	—	365 days	2%

Where these dates come from

ZIP code 34985 is matched to the NOAA station Stuart, FL, 15.9 km away, at 13 ft elevation (3 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Stuart, FL (used)	13 ft	Jan 23	Jan 18
Nettles Is, FL	10 ft	—	—
Ft Pierce, FL	25 ft	Jan 22	Jan 12
Ft Pierce St Lucie Co Intl Ap, FL	24 ft	Jan 24	Jan 14

Frost dates near Port Saint Lucie

Port Saint Lucie, FL 34983 · last Jan 22, first Jan 12
Fort Pierce, FL 34982 · last Jan 22, first Jan 12
Jensen Beach, FL 34958 · last Jan 23, first Jan 18
Stuart, FL 34994 · last Jan 23, first Jan 18
Palm City, FL 34990 · last Jan 23, first Jan 18
Port Salerno, FL 34992 · last Jan 23, first Jan 18
Indiantown, FL 34956 · last Jan 26, first Jan 15
Hobe Sound, FL 33455 · last Jan 26, first Jan 15

Frequently asked questions

When is the last frost in Port Saint Lucie, FL?: Frost occurs in about 14% of years at the nearest NOAA station (Stuart, FL), so there is no reliable average last frost date.
When is the first frost in Port Saint Lucie, FL?: Frost occurs in about 14% of years at the nearest NOAA station.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.