Lookout Mountain, TN 37409 Frost Dates
When can you plant in Lookout Mountain, TN?
Around 03/31 is the usual last spring frost, about 215 days away. The first fall frost typically arrives around 11/06, about 219 frost-free days later.
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.
What to do before the first frost
About 10 weeks of growing season left in Lookout Mountain before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/31 isn't a guarantee
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/15 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lookout Mountain compares
At roughly 219 frost-free days, Lookout Mountain places 13,037 of 40,283 ZIP codes in this dataset. Within TN, it ranks 148 of 770.
Learn more
local microclimates covers what one yard in Lookout Mountain can differ from the 37409 normal. zone vs. frost date covers why Zone 8a and Lookout Mountain's frost date answer different questions.