When is the last frost in Dunedin, FL?

For ZIP code 34698, the average last spring frost (32°F) is January 20, based on NOAA 1991-2020 climate normals for the Tarpon Spgs Sewage Plt, FL weather station. There is a 1-in-10 chance of a frost after February 14.

When is the first frost in Dunedin, FL?

The average first fall frost (32°F) is January 9. There is a 1-in-10 chance of frost by December 16, so tender plants are at risk from that point on.

How long is the growing season in 34698?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 354 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 34698Dunedin, FL

The average last spring frost in Dunedin is January 20 and the average first fall frost is January 9, giving a typical growing season of about 354 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 20
Average first fall frost: Jan 9
Growing season: 354 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 1 · Jan 31 · Mar 1	Dec 3 · Dec 31 · Jan 27	326 days	91%
Frost / freeze (32°F)	Dec 29 · Jan 20 · Feb 14	Dec 16 · Jan 9 · Feb 4	354 days	58%
Hard freeze (28°F)	Dec 29 · Jan 15 · Feb 5	Dec 24 · Jan 13 · Feb 1	365 days	21%

Where these dates come from

ZIP code 34698 is matched to the NOAA station Tarpon Spgs Sewage Plt, FL, 14 km away, at 6 ft elevation (17 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Tarpon Spgs Sewage Plt, FL (used)	6 ft	Jan 20	Jan 9
St Petersburg Intl Ap, FL	11 ft	Jan 17	Jan 14
Tampa Intl Ap, FL	19 ft	Jan 20	Jan 12
St Petersburg Ap, FL	8 ft	—	—

Frost dates near Dunedin

Clearwater, FL 33763 · last Jan 17, first Jan 14
Ozona, FL 34660 · last Jan 20, first Jan 9
Palm Harbor, FL 34683 · last Jan 20, first Jan 9
Crystal Beach, FL 34681 · last Jan 20, first Jan 9
Safety Harbor, FL 34695 · last Jan 17, first Jan 14
Clearwater Beach, FL 33767 · last Jan 17, first Jan 14
Oldsmar, FL 34677 · last Jan 20, first Jan 9
Largo, FL 33770 · last Jan 17, first Jan 14

Frequently asked questions

When is the last frost in Dunedin, FL?: For ZIP code 34698, the average last spring frost (32°F) is January 20, based on NOAA 1991-2020 climate normals for the Tarpon Spgs Sewage Plt, FL weather station. There is a 1-in-10 chance of a frost after February 14.
When is the first frost in Dunedin, FL?: The average first fall frost (32°F) is January 9. There is a 1-in-10 chance of frost by December 16, so tender plants are at risk from that point on.
How long is the growing season in 34698?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 354 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.