Danville, KY 40422 Frost Dates
40422, near Danville, KY: the frost window
Around 04/09 is the usual last spring frost, about 224 days away. Fall's first freeze usually shows up around 10/27, roughly 199 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Danville in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Danville'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.
Danville against the rest of the dataset
Danville's growing season runs about 199 days, ranking 18,043 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 278 of 909.
Learn more
Two guides worth reading on 40422: local microclimates, on what one yard in Danville can differ from the 40422 normal, and zone vs. frost date, on why Zone 7a and Danville's frost date answer different questions.