Keystone Heights, FL 32185 Frost Dates
When can you plant in Keystone Heights, FL?
Around 03/01 is the usual last spring frost, about 185 days away. The first fall frost typically arrives around 12/07, about 284 frost-free days later.
The USDA Plant Hardiness Zone Map puts Keystone Heights in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 14 weeks of growing season left in Keystone Heights before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/01 isn't a guarantee
03/01 is the middle of 30 years of NOAA records, not a promise. Plant by 01/29 and you're betting against frost in roughly 9 years out of 10. 03/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Keystone Heights compares
At roughly 284 frost-free days, Keystone Heights places 4,698 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,379 of 1,609.
Learn more
local microclimates covers what one yard in Keystone Heights can differ from the 32185 normal. zone vs. frost date covers why Zone 9a and Keystone Heights's frost date answer different questions.