Waterloo, AL 35677 Frost Dates
Frost dates for Waterloo, AL, ZIP 35677
Around 04/09 is the usual last spring frost, about 224 days away. The first fall frost typically arrives around 10/28, about 203 frost-free days later.
The USDA Plant Hardiness Zone Map puts Waterloo in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 7b around Waterloo has about 9 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 04/09 isn't a guarantee
04/09 is the middle of 30 years of NOAA records, not a promise. Plant by 03/23 and you're betting against frost in roughly 9 years out of 10. 04/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Waterloo compares
About 203 days separate Waterloo's last and first frost, putting it 17,054 of 40,283 ZIP codes nationally. Within AL, it ranks 800 of 809.
Learn more
local microclimates explains what one yard in Waterloo can differ from the 35677 normal, and zone vs. frost date explains why Zone 7b and Waterloo's frost date answer different questions.