Simpsonville, KY 40022 Frost Dates
40022, near Simpsonville, KY: the frost window
Typically, the last spring freeze lands around 05/01, roughly 246 days out. Fall's first freeze usually shows up around 10/10, roughly 161 days after the last spring frost.
Simpsonville sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Simpsonville's growing season runs out in roughly 6 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
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Simpsonville against the rest of the dataset
At roughly 161 frost-free days, Simpsonville places 32,049 of 40,283 ZIP codes in this dataset. Within KY, it ranks 903 of 909.
Learn more
Two guides worth reading on 40022: local microclimates, on what one yard in Simpsonville can differ from the 40022 normal, and zone vs. frost date, on why Zone 6b and Simpsonville's frost date answer different questions.