Altamonte Springs, FL 32779 Frost Dates
Frost dates for Altamonte Springs, FL, ZIP 32779
Around 02/24 is the usual last spring frost, about 180 days away. The first fall frost typically arrives around 12/29, about 301 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 Altamonte Springs, not a forecast for this year.
What to do before the first frost
Zone 9b around Altamonte Springs has about 18 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 Altamonte Springs's last frost
02/24 is the middle of 30 years of NOAA records, not a promise. Plant by 01/22 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 Altamonte Springs compares
Altamonte Springs's growing season runs about 301 days, ranking 3,935 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 1,308 of 1,609.
Learn more
zone vs. frost date explains why Zone 9b and Altamonte Springs's frost date answer different questions, and the frost range explains how to read the range around Altamonte Springs's dates instead of trusting one.