Lookout Mountain, TN 37408 Frost Dates
Lookout Mountain, TN: when does the frost end?
Typically, the last spring freeze lands around 03/31, roughly 215 days out. Fall's first freeze usually shows up around 11/06, roughly 219 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lookout Mountain 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 10 weeks until Lookout Mountain's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/31 isn't a guarantee
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/18 and only about 1 year in 10 sees frost after that.
Lookout Mountain against the rest of the dataset
At roughly 219 frost-free days, Lookout Mountain places 13,036 of 40,283 ZIP codes in this dataset. Within TN, it ranks 147 of 770.
Learn more
Before leaning on 37408's figures: the frost range explains how to read the range around Lookout Mountain's dates instead of trusting one, while local microclimates explains what one yard in Lookout Mountain can differ from the 37408 normal.