Poquoson, VA 23056 Frost Dates
23056, near Poquoson, VA: the frost window
The last spring frost here typically falls around 04/01, about 216 days from today. Fall's first freeze usually shows up around 11/10, roughly 223 days after the last spring frost.
Poquoson 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
Poquoson's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
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.
Poquoson against the rest of the dataset
About 223 days separate Poquoson's last and first frost, putting it 12,044 of 40,283 ZIP codes nationally. Within VA, it ranks 210 of 1,178.
Learn more
Two guides worth reading on 23056: local microclimates, on what one yard in Poquoson can differ from the 23056 normal, and zone vs. frost date, on why Zone 8a and Poquoson's frost date answer different questions.