Heath, AL 36421 Frost Dates
Heath, AL: when does the frost end?
Around 03/25 is the usual last spring frost, about 209 days away. Fall's first freeze usually shows up around 11/09, roughly 230 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Heath in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 10 weeks until Heath's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Heath's last frost
03/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/14 and only about 1 year in 10 sees frost after that.
Heath against the rest of the dataset
About 230 days separate Heath's last and first frost, putting it 10,479 of 40,283 ZIP codes nationally. Within AL, it ranks 519 of 809.
Learn more
Before leaning on 36421's figures: the frost range explains how to read the range around Heath's dates instead of trusting one, while local microclimates explains what one yard in Heath can differ from the 36421 normal.