Williamsburg, VA 23127 Frost Dates
Frost dates for Williamsburg, VA, ZIP 23127
Typically, the last spring freeze lands around 03/31, roughly 215 days out. The first fall frost typically arrives around 11/10, about 225 frost-free days later.
Zone 8a (10 to 15°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.
What to do before the first frost
Zone 8a around Williamsburg has about 11 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
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/15 and you're betting against frost in roughly 9 years out of 10. 04/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Williamsburg compares
At roughly 225 frost-free days, Williamsburg places 11,375 of 40,283 ZIP codes in this dataset. Within VA, it ranks 169 of 1,178.
Learn more
the frost range explains how to read the range around Williamsburg's dates instead of trusting one, and local microclimates explains what one yard in Williamsburg can differ from the 23127 normal.