Kingsport, TN 37663 Frost Dates
When can you plant in Kingsport, TN?
The last spring frost here typically falls around 04/09, about 224 days from today. The first fall frost typically arrives around 10/29, about 203 frost-free days later.
The USDA Plant Hardiness Zone Map puts Kingsport in Zone 7b (5 to 10°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 9 weeks of growing season left in Kingsport before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/09 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 04/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kingsport compares
About 203 days separate Kingsport's last and first frost, putting it 16,840 of 40,283 ZIP codes nationally. Within TN, it ranks 492 of 770.
Learn more
the frost range covers how to read the range around Kingsport's dates instead of trusting one. local microclimates covers what one yard in Kingsport can differ from the 37663 normal.