Crystal River, FL 34429 Frost Dates
Crystal River, FL: when does the frost end?
Typically, the last spring freeze lands around 02/03, roughly 159 days out. 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.
The actual range around Crystal River's last frost
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 3,110 of 40,283 ZIP codes nationally. Within FL, it ranks 1,193 of 1,609.
Learn more
Before leaning on 34429's figures: zone vs. frost date explains why Zone 9b and Crystal River's frost date answer different questions, while the frost range explains how to read the range around Crystal River's dates instead of trusting one.