Unicoi, TN 37692 Frost Dates
Frost dates for Unicoi, TN, ZIP 37692
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/12, about 165 frost-free days later.
The USDA Plant Hardiness Zone Map puts Unicoi in Zone 7a (0 to 5°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
Zone 7a around Unicoi has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Unicoi compares
Unicoi's growing season runs about 165 days, ranking 30,569 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 770 of 770.
Learn more
local microclimates explains what one yard in Unicoi can differ from the 37692 normal, and zone vs. frost date explains why Zone 7a and Unicoi's frost date answer different questions.