Huntsville, AL 35811 Frost Dates
Huntsville, AL: when does the frost end?
Typically, the last spring freeze lands around 04/04, roughly 219 days out. Fall's first freeze usually shows up around 10/30, roughly 210 days after the last spring frost.
Zone 8a (10 to 15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Huntsville, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Huntsville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Huntsville's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Huntsville against the rest of the dataset
About 210 days separate Huntsville's last and first frost, putting it 14,928 of 40,283 ZIP codes nationally. Within AL, it ranks 714 of 809.
Learn more
Before leaning on 35811's figures: zone vs. frost date explains why Zone 8a and Huntsville's frost date answer different questions, while the frost range explains how to read the range around Huntsville's dates instead of trusting one.