Huntsville, TN 37852 Frost Dates
Huntsville, TN: when does the frost end?
Typically, the last spring freeze lands around 04/21, roughly 236 days out. Fall's first freeze usually shows up around 10/17, roughly 177 days after the last spring frost.
Huntsville sits in USDA Zone 7a (0 to 5°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
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.
The actual range around Huntsville's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 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 26,153 of 40,283 ZIP codes nationally. Within TN, it ranks 740 of 770.
Learn more
Before leaning on 37852's figures: the frost range explains how to read the range around Huntsville's dates instead of trusting one, while local microclimates explains what one yard in Huntsville can differ from the 37852 normal.