Simpsonville, KY 40023 Frost Dates
Frost dates for Simpsonville, KY, ZIP 40023
The last spring frost here typically falls around 04/06, about 221 days from today. The first fall frost typically arrives around 11/01, about 209 frost-free days later.
The USDA Plant Hardiness Zone Map puts Simpsonville 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 Simpsonville has about 9 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.
The actual range around Simpsonville's last frost
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/23 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Simpsonville compares
About 209 days separate Simpsonville's last and first frost, putting it 15,247 of 40,283 ZIP codes nationally. Within KY, it ranks 142 of 909.
Learn more
the frost range explains how to read the range around Simpsonville's dates instead of trusting one, and local microclimates explains what one yard in Simpsonville can differ from the 40023 normal.