Montgomery, AL 36108 Frost Dates
Frost dates for Montgomery, AL, ZIP 36108
Typically, the last spring freeze lands around 03/13, roughly 197 days out. The first fall frost typically arrives around 11/13, about 244 frost-free days later.
Montgomery sits in USDA Zone 8b (15 to 20°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 8b around Montgomery has about 11 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 03/13 isn't a guarantee
03/13 is the middle of 30 years of NOAA records, not a promise. Plant by 02/20 and you're betting against frost in roughly 9 years out of 10. 03/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Montgomery compares
About 244 days separate Montgomery's last and first frost, putting it 8,186 of 40,283 ZIP codes nationally. Within AL, it ranks 243 of 809.
Learn more
local microclimates explains what one yard in Montgomery can differ from the 36108 normal, and zone vs. frost date explains why Zone 8b and Montgomery's frost date answer different questions.