Williamsburg, VA 23072 Frost Dates
Williamsburg, VA: when does the frost end?
Typically, the last spring freeze lands around 04/01, roughly 216 days out. Fall's first freeze usually shows up around 11/10, roughly 223 days after the last spring frost.
Williamsburg sits in USDA Zone 8a (10 to 15°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.
Stretching the season past the first frost
With roughly 11 weeks until Williamsburg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/01 isn't a guarantee
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Williamsburg against the rest of the dataset
About 223 days separate Williamsburg's last and first frost, putting it 12,031 of 40,283 ZIP codes nationally. Within VA, it ranks 203 of 1,178.
Learn more
Before leaning on 23072's figures: the frost range explains how to read the range around Williamsburg's dates instead of trusting one, while local microclimates explains what one yard in Williamsburg can differ from the 23072 normal.