Hustonville, KY 40437 Frost Dates
40437, near Hustonville, KY: the frost window
The last spring frost here typically falls around 04/09, about 224 days from today. Fall's first freeze usually shows up around 10/27, roughly 199 days after the last spring frost.
Zone 7a (0 to 5°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 Hustonville, not a forecast for this year.
Stretching the season past the first frost
Hustonville's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/09 isn't a guarantee
04/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Hustonville against the rest of the dataset
About 199 days separate Hustonville's last and first frost, putting it 18,198 of 40,283 ZIP codes nationally. Within KY, it ranks 295 of 909.
Learn more
Two guides worth reading on 40437: zone vs. frost date, on why Zone 7a and Hustonville's frost date answer different questions, and the frost range, on how to read the range around Hustonville's dates instead of trusting one.