When is the last frost in Saint Leo, FL?

For ZIP code 33574, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Saint Leo, FL weather station. There is a 1-in-10 chance of a frost after February 28.

When is the first frost in Saint Leo, FL?

The average first fall frost (32°F) is January 8. There is a 1-in-10 chance of frost by December 10, so tender plants are at risk from that point on.

How long is the growing season in 33574?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 336 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 33574Saint Leo, FL

The average last spring frost in Saint Leo is January 31 and the average first fall frost is January 8, giving a typical growing season of about 336 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 31
Average first fall frost: Jan 8
Growing season: 336 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)	Jan 16 · Feb 16 · Mar 15	Nov 28 · Dec 22 · Jan 23	306 days	98%
Frost / freeze (32°F)	Jan 3 · Jan 31 · Feb 28	Dec 10 · Jan 8 · Feb 10	336 days	81%
Hard freeze (28°F)	Dec 27 · Jan 24 · Feb 19	Dec 21 · Jan 14 · Feb 15	365 days	37%

Where these dates come from

ZIP code 33574 is matched to the NOAA station Saint Leo, FL, 1 km away, at 190 ft elevation (3 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Saint Leo, FL (used)	190 ft	Jan 31	Jan 8
Brooksville Hernando Co Ap, FL	77 ft	Mar 1	Dec 5
Brooksville Chin Hill, FL	240 ft	Feb 3	Jan 3
Weeki Wachee, FL	20 ft	Feb 5	Jan 1

Frost dates near Saint Leo

San Antonio, FL 33576 · last Jan 31, first Jan 8
Dade City, FL 33525 · last Jan 31, first Jan 8
Wesley Chapel, FL 33545 · last Jan 31, first Jan 8
Zephyrhills, FL 33541 · last Jan 31, first Jan 8
Trilby, FL 33593 · last Jan 31, first Jan 8
Lacoochee, FL 33537 · last Jan 31, first Jan 8
Brooksville, FL 34602 · last Mar 1, first Dec 5
Land O Lakes, FL 34637 · last Mar 1, first Dec 5

Frequently asked questions

When is the last frost in Saint Leo, FL?: For ZIP code 33574, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Saint Leo, FL weather station. There is a 1-in-10 chance of a frost after February 28.
When is the first frost in Saint Leo, FL?: The average first fall frost (32°F) is January 8. There is a 1-in-10 chance of frost by December 10, so tender plants are at risk from that point on.
How long is the growing season in 33574?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 336 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.