Moundville, AL 35474 Frost Dates
35474, near Moundville, AL: the frost window
Around 03/17 is the usual last spring frost, about 201 days away. Fall's first freeze usually shows up around 11/11, roughly 240 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Moundville 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
Moundville's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/06 and only about 1 year in 10 sees frost after that.
Moundville against the rest of the dataset
Moundville's growing season runs about 240 days, ranking 8,695 of 40,283 US ZIP codes measured here, longest to shortest. Within AL, it ranks 299 of 809.
Learn more
Two guides worth reading on 35474: local microclimates, on what one yard in Moundville can differ from the 35474 normal, and zone vs. frost date, on why Zone 8b and Moundville's frost date answer different questions.