When is the last frost in Riverview, FL?

For ZIP code 33569, the average last spring frost (32°F) is January 20, based on NOAA 1991-2020 climate normals for the Tampa Bay Area Wfo, FL weather station. There is a 1-in-10 chance of a frost after February 16.

When is the first frost in Riverview, FL?

The average first fall frost (32°F) is January 9. There is a 1-in-10 chance of frost by December 19, so tender plants are at risk from that point on.

How long is the growing season in 33569?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 357 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 33569Riverview, FL

The average last spring frost in Riverview is January 20 and the average first fall frost is January 9, giving a typical growing season of about 357 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 20
Average first fall frost: Jan 9
Growing season: 357 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 6 · Feb 3 · Mar 6	Dec 4 · Jan 1 · Feb 1	327 days	91%
Frost / freeze (32°F)	Dec 31 · Jan 20 · Feb 16	Dec 19 · Jan 9 · Feb 7	357 days	54%
Hard freeze (28°F)	Dec 31 · Jan 17 · Feb 7	Dec 29 · Jan 14 · Feb 5	365 days	17%

Where these dates come from

ZIP code 33569 is matched to the NOAA station Tampa Bay Area Wfo, FL, 17.8 km away, at 40 ft elevation (9 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Tampa Bay Area Wfo, FL (used)	40 ft	Jan 20	Jan 9
Tampa Intl Ap, FL	19 ft	Jan 20	Jan 12
Plant City, FL	110 ft	Jan 30	Jan 6
Parrish, FL	60 ft	Jan 28	Jan 9

Frost dates near Riverview

Riverview, FL 33578 · last Jan 20, first Jan 9
Gibsonton, FL 33534 · last Jan 20, first Jan 9
Brandon, FL 33511 · last Jan 30, first Jan 6
Valrico, FL 33596 · last Jan 30, first Jan 6
Balm, FL 33503 · last Jan 20, first Jan 9
Tampa, FL 33619 · last Jan 20, first Jan 12
Apollo Beach, FL 33572 · last Jan 20, first Jan 9
Seffner, FL 33583 · last Jan 20, first Jan 12

Frequently asked questions

When is the last frost in Riverview, FL?: For ZIP code 33569, the average last spring frost (32°F) is January 20, based on NOAA 1991-2020 climate normals for the Tampa Bay Area Wfo, FL weather station. There is a 1-in-10 chance of a frost after February 16.
When is the first frost in Riverview, FL?: The average first fall frost (32°F) is January 9. There is a 1-in-10 chance of frost by December 19, so tender plants are at risk from that point on.
How long is the growing season in 33569?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 357 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.