Crystal River, FL 34447 Frost Dates
Crystal River, FL: when does the frost end?
The last spring frost here typically falls around 02/03, about 159 days from today. Fall's first freeze usually shows up around 01/03, roughly 329 days after the last spring frost.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Crystal River, not a forecast for this year.
Stretching the season past the first frost
With roughly 18 weeks until Crystal River's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 02/03 isn't a guarantee
02/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/03 and only about 1 year in 10 sees frost after that.
Crystal River against the rest of the dataset
About 329 days separate Crystal River's last and first frost, putting it 3,112 of 40,283 ZIP codes nationally. Within FL, it ranks 1,195 of 1,609.
Learn more
Before leaning on 34447's figures: local microclimates explains what one yard in Crystal River can differ from the 34447 normal, while zone vs. frost date explains why Zone 9b and Crystal River's frost date answer different questions.