Williamsburg, VA 23062 Frost Dates
Frost dates for Williamsburg, VA, ZIP 23062
Around 04/01 is the usual last spring frost, about 216 days away. The first fall frost typically arrives around 11/09, about 221 frost-free days later.
The USDA Plant Hardiness Zone Map puts Williamsburg in Zone 8a (10 to 15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 8a around Williamsburg has about 10 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.
Why 04/01 isn't a guarantee
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/18 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Williamsburg compares
About 221 days separate Williamsburg's last and first frost, putting it 12,462 of 40,283 ZIP codes nationally. Within VA, it ranks 268 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 23062 normal.