Calhoun, KY 42371 Frost Dates
42371, near Calhoun, KY: the frost window
Typically, the last spring freeze lands around 04/02, roughly 217 days out. Fall's first freeze usually shows up around 11/01, roughly 211 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 Calhoun, not a forecast for this year.
Stretching the season past the first frost
Calhoun'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 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Calhoun against the rest of the dataset
Calhoun's growing season runs about 211 days, ranking 14,825 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 126 of 909.
Learn more
Two guides worth reading on 42371: local microclimates, on what one yard in Calhoun can differ from the 42371 normal, and zone vs. frost date, on why Zone 7a and Calhoun's frost date answer different questions.