Huntsville, AL 35802 Frost Dates
Huntsville, AL: when does the frost end?
Around 04/04 is the usual last spring frost, about 219 days away. Fall's first freeze usually shows up around 10/30, roughly 210 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Huntsville in Zone 8a (10 to 15°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 9 weeks until Huntsville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
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
Huntsville's growing season runs about 210 days, ranking 14,927 of 40,283 US ZIP codes measured here, longest to shortest. Within AL, it ranks 713 of 809.
Learn more
Before leaning on 35802's figures: local microclimates explains what one yard in Huntsville can differ from the 35802 normal, while zone vs. frost date explains why Zone 8a and Huntsville's frost date answer different questions.