Barbourville, KY 40921 Frost Dates
40921, near Barbourville, KY: the frost window
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 10/24, roughly 187 days after the last spring frost.
Barbourville sits in USDA Zone 7a (0 to 5°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
Barbourville'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.
The actual range around Barbourville's last frost
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Barbourville against the rest of the dataset
At roughly 187 frost-free days, Barbourville places 22,381 of 40,283 ZIP codes in this dataset. Within KY, it ranks 653 of 909.
Learn more
Two guides worth reading on 40921: zone vs. frost date, on why Zone 7a and Barbourville's frost date answer different questions, and the frost range, on how to read the range around Barbourville's dates instead of trusting one.