Poquoson, VA 23163 Frost Dates
Frost dates for Poquoson, VA, ZIP 23163
Typically, the last spring freeze lands around 04/01, roughly 216 days out. The first fall frost typically arrives around 11/10, about 223 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 Poquoson, not a forecast for this year.
What to do before the first frost
Zone 8a around Poquoson 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.
Why 04/01 isn't a guarantee
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Poquoson compares
At roughly 223 frost-free days, Poquoson places 12,047 of 40,283 ZIP codes in this dataset. Within VA, it ranks 213 of 1,178.
Learn more
zone vs. frost date explains why Zone 8a and Poquoson's frost date answer different questions, and the frost range explains how to read the range around Poquoson's dates instead of trusting one.