Port Richey, FL 34668 Frost Dates
34668, near Port Richey, FL: the frost window
Around 01/20 is the usual last spring frost, about 145 days away. Fall's first freeze usually shows up around 01/09, roughly 354 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Port Richey in Zone 10a (30 to 35°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Port Richey's growing season runs out in roughly 19 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 01/20 isn't a guarantee
01/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/29 and only about 1 year in 10 sees frost after that.
Port Richey against the rest of the dataset
Port Richey's growing season runs about 354 days, ranking 2,199 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 963 of 1,609.
Learn more
Two guides worth reading on 34668: local microclimates, on what one yard in Port Richey can differ from the 34668 normal, and zone vs. frost date, on why Zone 10a and Port Richey's frost date answer different questions.