Macclenny, FL 32063 Frost Dates
Frost dates for Macclenny, FL, ZIP 32063
Around 02/28 is the usual last spring frost, about 184 days away. The first fall frost typically arrives around 12/03, about 280 frost-free days later.
Macclenny 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.
What to do before the first frost
Zone 9a around Macclenny has about 14 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Macclenny's last frost
02/28 is the middle of 30 years of NOAA records, not a promise. Plant by 01/30 and you're betting against frost in roughly 9 years out of 10. 03/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Macclenny compares
Macclenny's growing season runs about 280 days, ranking 4,831 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 1,432 of 1,609.
Learn more
the frost range explains how to read the range around Macclenny's dates instead of trusting one, and local microclimates explains what one yard in Macclenny can differ from the 32063 normal.