Moundville, AL 35463 Frost Dates
35463, near Moundville, AL: the frost window
Around 03/12 is the usual last spring frost, about 196 days away. Fall's first freeze usually shows up around 11/15, roughly 250 days after the last spring frost.
Moundville 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.
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.
Why 03/12 isn't a guarantee
03/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/02 and only about 1 year in 10 sees frost after that.
Moundville against the rest of the dataset
At roughly 250 frost-free days, Moundville places 7,533 of 40,283 ZIP codes in this dataset. Within AL, it ranks 206 of 809.
Learn more
Two guides worth reading on 35463: zone vs. frost date, on why Zone 8b and Moundville's frost date answer different questions, and the frost range, on how to read the range around Moundville's dates instead of trusting one.