Cynthiana, KY 41031 Frost Dates
Frost dates for Cynthiana, KY, ZIP 41031
Typically, the last spring freeze lands around 04/18, roughly 233 days out. The first fall frost typically arrives around 10/23, about 188 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Cynthiana, not a forecast for this year.
What to do before the first frost
Zone 6b around Cynthiana 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.
The actual range around Cynthiana's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cynthiana compares
At roughly 188 frost-free days, Cynthiana places 21,969 of 40,283 ZIP codes in this dataset. Within KY, it ranks 599 of 909.
Learn more
the frost range explains how to read the range around Cynthiana's dates instead of trusting one, and local microclimates explains what one yard in Cynthiana can differ from the 41031 normal.