Mobile, AL 36615 Frost Dates
Frost dates for Mobile, AL, ZIP 36615
Typically, the last spring freeze lands around 02/21, roughly 177 days out. The first fall frost typically arrives around 12/06, about 292 frost-free days later.
Zone 9a (20 to 25°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 Mobile, not a forecast for this year.
What to do before the first frost
Zone 9a around Mobile 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.
Why 02/21 isn't a guarantee
02/21 is the middle of 30 years of NOAA records, not a promise. Plant by 01/25 and you're betting against frost in roughly 9 years out of 10. 03/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mobile compares
About 292 days separate Mobile's last and first frost, putting it 4,312 of 40,283 ZIP codes nationally. Within AL, it ranks 11 of 809.
Learn more
local microclimates explains what one yard in Mobile can differ from the 36615 normal, and zone vs. frost date explains why Zone 9a and Mobile's frost date answer different questions.