Williamsburg, KY 40759 Frost Dates
40759, near Williamsburg, KY: the frost window
The last spring frost here typically falls around 04/21, about 236 days from today. Fall's first freeze usually shows up around 10/22, roughly 182 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 Williamsburg, not a forecast for this year.
Stretching the season past the first frost
Williamsburg'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 Williamsburg's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/08 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.
Williamsburg against the rest of the dataset
Williamsburg's growing season runs about 182 days, ranking 24,133 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 770 of 909.
Learn more
Two guides worth reading on 40759: zone vs. frost date, on why Zone 7a and Williamsburg's frost date answer different questions, and the frost range, on how to read the range around Williamsburg's dates instead of trusting one.