When is the last frost in Hobe Sound, FL?

Frost occurs in about 33% of years at the nearest NOAA station (Port Salerno 5W, FL), so there is no reliable average last frost date.

When is the first frost in Hobe Sound, FL?

Frost occurs in about 33% 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 33455Hobe Sound, FL

Frost occurs in about 33% of years near Hobe Sound, based on NOAA 1991-2020 records for the Port Salerno 5W, FL station.

Frost occurs in about 33% 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 · Feb 3 · Mar 3	Dec 22 · Jan 12 · Feb 13	337 days	71%
Frost / freeze (32°F)	Jan 1 · Jan 26 · Feb 18	Dec 26 · Jan 15 · Feb 10	365 days	33%
Hard freeze (28°F)	—	—	365 days	8%

Where these dates come from

ZIP code 33455 is matched to the NOAA station Port Salerno 5W, FL, 11.3 km away, at 12 ft elevation (4 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Port Salerno 5W, FL (used)	12 ft	Jan 26	Jan 15
Stuart, FL	13 ft	Jan 23	Jan 18
Nettles Is, FL	10 ft	—	—
Juno Beach, FL	5 ft	Jan 26	Jan 16

Frost dates near Hobe Sound

Hobe Sound, FL 33475 · last Jan 26, first Jan 15
Port Salerno, FL 34992 · last Jan 23, first Jan 18
Stuart, FL 34997 · last Jan 23, first Jan 18
Jupiter, FL 33469 · last Jan 26, first Jan 16
Palm City, FL 34991 · last Jan 23, first Jan 18
Jensen Beach, FL 34957 · last Jan 23, first Jan 18
Port Saint Lucie, FL 34952 · last Jan 23, first Jan 18
Palm Beach Gardens, FL 33410 · last Jan 21, first Jan 15

Frequently asked questions

When is the last frost in Hobe Sound, FL?: Frost occurs in about 33% of years at the nearest NOAA station (Port Salerno 5W, FL), so there is no reliable average last frost date.
When is the first frost in Hobe Sound, FL?: Frost occurs in about 33% 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.