Florence, AL 35617 Frost Dates
35617, near Florence, AL: the frost window
Around 03/27 is the usual last spring frost, about 211 days away. Fall's first freeze usually shows up around 11/03, roughly 220 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Florence in Zone 7b (5 to 10°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
Florence's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/27 isn't a guarantee
03/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/13 and only about 1 year in 10 sees frost after that.
Florence against the rest of the dataset
About 220 days separate Florence's last and first frost, putting it 12,682 of 40,283 ZIP codes nationally. Within AL, it ranks 624 of 809.
Learn more
Two guides worth reading on 35617: zone vs. frost date, on why Zone 7b and Florence's frost date answer different questions, and the frost range, on how to read the range around Florence's dates instead of trusting one.