Barbourville, KY 40903 Frost Dates
40903, 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.
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 Barbourville, not a forecast for this year.
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
Barbourville's growing season runs about 187 days, ranking 22,378 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 650 of 909.
Learn more
Two guides worth reading on 40903: local microclimates, on what one yard in Barbourville can differ from the 40903 normal, and zone vs. frost date, on why Zone 7a and Barbourville's frost date answer different questions.