Grayson, KY 41146 Frost Dates
41146, near Grayson, KY: the frost window
Around 05/02 is the usual last spring frost, about 247 days away. Fall's first freeze usually shows up around 10/11, roughly 160 days after the last spring frost.
Zone 6b (-5 to 0°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 Grayson, not a forecast for this year.
Stretching the season past the first frost
Grayson'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
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Grayson against the rest of the dataset
Grayson's growing season runs about 160 days, ranking 32,316 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 907 of 909.
Learn more
Two guides worth reading on 41146: the frost range, on how to read the range around Grayson's dates instead of trusting one, and local microclimates, on what one yard in Grayson can differ from the 41146 normal.