When is the last frost in Saint Augustine, FL?

For ZIP code 32092, the average last spring frost (32°F) is February 14, based on NOAA 1991-2020 climate normals for the Hastings 4Ne, FL weather station. There is a 1-in-10 chance of a frost after March 17.

When is the first frost in Saint Augustine, FL?

The average first fall frost (32°F) is December 30. There is a 1-in-10 chance of frost by November 28, so tender plants are at risk from that point on.

How long is the growing season in 32092?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 308 days long.

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 32092Saint Augustine, FL

The average last spring frost in Saint Augustine is February 14 and the average first fall frost is December 30, giving a typical growing season of about 308 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 14
Average first fall frost: Dec 30
Growing season: 308 days

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)	Feb 7 · Mar 9 · Apr 2	Nov 14 · Dec 5 · Jan 4	270 days	100%
Frost / freeze (32°F)	Jan 11 · Feb 14 · Mar 17	Nov 28 · Dec 30 · Jan 26	308 days	95%
Hard freeze (28°F)	Dec 31 · Jan 31 · Feb 28	Dec 10 · Jan 8 · Feb 9	341 days	71%

Where these dates come from

ZIP code 32092 is matched to the NOAA station Hastings 4Ne, FL, 21 km away, at 10 ft elevation (10 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Hastings 4Ne, FL (used)	10 ft	Feb 14	Dec 30
Federal Pt, FL	5 ft	Jan 31	Jan 4
St Augustine Lighthouse, FL	12 ft	Feb 1	Jan 5
Jacksonville Nas, FL	20 ft	Feb 1	Jan 5

Frost dates near Saint Augustine

Saint Augustine, FL 32085 · last Feb 1, first Jan 5
Jacksonville, FL 32260 · last Feb 1, first Jan 5
Saint Johns, FL 32259 · last Feb 1, first Jan 5
Elkton, FL 32033 · last Feb 14, first Dec 30
Bostwick, FL 32007 · last Jan 31, first Jan 4
Ponte Vedra, FL 32081 · last Jan 31, first Jan 10
Green Cove Springs, FL 32043 · last Feb 1, first Jan 5
Fleming Island, FL 32003 · last Feb 1, first Jan 5

Frequently asked questions

When is the last frost in Saint Augustine, FL?: For ZIP code 32092, the average last spring frost (32°F) is February 14, based on NOAA 1991-2020 climate normals for the Hastings 4Ne, FL weather station. There is a 1-in-10 chance of a frost after March 17.
When is the first frost in Saint Augustine, FL?: The average first fall frost (32°F) is December 30. There is a 1-in-10 chance of frost by November 28, so tender plants are at risk from that point on.
How long is the growing season in 32092?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 308 days long.
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.