Crystal River, FL 34465 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.
Crystal River sits in USDA Zone 9a (20 to 25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
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.
How much risk comes with planting early here
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
At roughly 329 frost-free days, Crystal River places 3,117 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,200 of 1,609.
Learn more
Before leaning on 34465's figures: local microclimates explains what one yard in Crystal River can differ from the 34465 normal, while zone vs. frost date explains why Zone 9a and Crystal River's frost date answer different questions.