Port Royal, VA 22509 Frost Dates
When can you plant in Port Royal, VA?
Typically, the last spring freeze lands around 04/08, roughly 223 days out. The first fall frost typically arrives around 10/30, about 204 frost-free days later.
Port Royal sits in USDA Zone 7b (5 to 10°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.
What to do before the first frost
About 9 weeks of growing season left in Port Royal before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/26 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Port Royal compares
About 204 days separate Port Royal's last and first frost, putting it 16,774 of 40,283 ZIP codes nationally. Within VA, it ranks 562 of 1,178.
Learn more
the frost range covers how to read the range around Port Royal's dates instead of trusting one. local microclimates covers what one yard in Port Royal can differ from the 22509 normal.