Lewisburg, TN 37091 Frost Dates
Frost dates for Lewisburg, TN, ZIP 37091
The last spring frost here typically falls around 04/14, about 229 days from today. The first fall frost typically arrives around 10/22, about 192 frost-free days later.
The USDA Plant Hardiness Zone Map puts Lewisburg 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
Zone 7b around Lewisburg has about 8 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
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lewisburg compares
Lewisburg's growing season runs about 192 days, ranking 20,212 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 616 of 770.
Learn more
local microclimates explains what one yard in Lewisburg can differ from the 37091 normal, and zone vs. frost date explains why Zone 7b and Lewisburg's frost date answer different questions.