Huntsville, TN 37755 Frost Dates
Huntsville, TN: when does the frost end?
Typically, the last spring freeze lands around 04/24, roughly 239 days out. Fall's first freeze usually shows up around 10/18, roughly 177 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Huntsville in Zone 7a (0 to 5°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 7 weeks until Huntsville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/24 isn't a guarantee
04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Huntsville against the rest of the dataset
About 177 days separate Huntsville's last and first frost, putting it 26,152 of 40,283 ZIP codes nationally. Within TN, it ranks 739 of 770.
Learn more
Before leaning on 37755's figures: zone vs. frost date explains why Zone 7a 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.