Frankfort, KY 40620 Frost Dates
40620, near Frankfort, KY: the frost window
Around 04/15 is the usual last spring frost, about 230 days away. Fall's first freeze usually shows up around 10/24, roughly 192 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Frankfort in Zone 6b (-5 to 0°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
Frankfort's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Frankfort against the rest of the dataset
Frankfort's growing season runs about 192 days, ranking 20,175 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 427 of 909.
Learn more
Two guides worth reading on 40620: the frost range, on how to read the range around Frankfort's dates instead of trusting one, and local microclimates, on what one yard in Frankfort can differ from the 40620 normal.