Crystal River, FL 34448 Frost Dates
When can you plant in Crystal River, FL?
The last spring frost here typically falls around 02/03, about 159 days from today. The first fall frost typically arrives around 01/03, about 329 frost-free days later.
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.
What to do before the first frost
About 18 weeks of growing season left in Crystal River before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 02/03 isn't a guarantee
02/03 is the middle of 30 years of NOAA records, not a promise. Plant by 01/01 and you're betting against frost in roughly 9 years out of 10. 03/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Crystal River compares
About 329 days separate Crystal River's last and first frost, putting it 3,113 of 40,283 ZIP codes nationally. Within FL, it ranks 1,196 of 1,609.
Learn more
zone vs. frost date covers why Zone 9b and Crystal River's frost date answer different questions. the frost range covers how to read the range around Crystal River's dates instead of trusting one.