Altha, FL 32430 Frost Dates
When can you plant in Altha, FL?
Typically, the last spring freeze lands around 03/01, roughly 185 days out. The first fall frost typically arrives around 11/29, about 271 frost-free days later.
Altha 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
About 13 weeks of growing season left in Altha before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
03/01 is the middle of 30 years of NOAA records, not a promise. Plant by 02/04 and you're betting against frost in roughly 9 years out of 10. 03/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Altha compares
At roughly 271 frost-free days, Altha places 5,468 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,502 of 1,609.
Learn more
the frost range covers how to read the range around Altha's dates instead of trusting one. local microclimates covers what one yard in Altha can differ from the 32430 normal.