When is the last frost in Dover, FL?

For ZIP code 33527, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the Plant City, FL weather station. There is a 1-in-10 chance of a frost after March 2.

When is the first frost in Dover, FL?

The average first fall frost (32°F) is January 6. There is a 1-in-10 chance of frost by December 8, so tender plants are at risk from that point on.

How long is the growing season in 33527?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 335 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 33527Dover, FL

The average last spring frost in Dover is January 30 and the average first fall frost is January 6, giving a typical growing season of about 335 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 30
Average first fall frost: Jan 6
Growing season: 335 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 17 · Feb 16 · Mar 17	Nov 27 · Dec 25 · Jan 22	303 days	98%
Frost / freeze (32°F)	Dec 31 · Jan 30 · Mar 2	Dec 8 · Jan 6 · Feb 5	335 days	81%
Hard freeze (28°F)	Dec 29 · Jan 20 · Feb 10	Dec 19 · Jan 11 · Feb 4	365 days	40%

Where these dates come from

ZIP code 33527 is matched to the NOAA station Plant City, FL, 8 km away, at 110 ft elevation (5 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Plant City, FL (used)	110 ft	Jan 30	Jan 6
Lakeland 2, FL	139 ft	Jan 26	Jan 9
Tampa Intl Ap, FL	19 ft	Jan 20	Jan 12
Tampa Bay Area Wfo, FL	40 ft	Jan 20	Jan 9

Frost dates near Dover

Sydney, FL 33587 · last Jan 30, first Jan 6
Valrico, FL 33594 · last Jan 30, first Jan 6
Seffner, FL 33584 · last Jan 30, first Jan 6
Plant City, FL 33563 · last Jan 30, first Jan 6
Brandon, FL 33510 · last Jan 30, first Jan 6
Mango, FL 33550 · last Jan 30, first Jan 6
Durant, FL 33530 · last Jan 30, first Jan 6
Thonotosassa, FL 33592 · last Jan 30, first Jan 6

Frequently asked questions

When is the last frost in Dover, FL?: For ZIP code 33527, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the Plant City, FL weather station. There is a 1-in-10 chance of a frost after March 2.
When is the first frost in Dover, FL?: The average first fall frost (32°F) is January 6. There is a 1-in-10 chance of frost by December 8, so tender plants are at risk from that point on.
How long is the growing season in 33527?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 335 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.