Grayson, KY 41181 Frost Dates
Frost dates for Grayson, KY, ZIP 41181
Around 05/02 is the usual last spring frost, about 247 days away. The first fall frost typically arrives around 10/11, about 160 frost-free days later.
Grayson sits in USDA Zone 6b (-5 to 0°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.
What to do before the first frost
Zone 6b around Grayson has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Grayson compares
Grayson's growing season runs about 160 days, ranking 32,317 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 908 of 909.
Learn more
zone vs. frost date explains why Zone 6b and Grayson's frost date answer different questions, and the frost range explains how to read the range around Grayson's dates instead of trusting one.