Port Royal, VA 22544 Frost Dates
Port Royal, VA: when does the frost end?
The last spring frost here typically falls around 03/28, about 212 days from today. Fall's first freeze usually shows up around 11/08, roughly 226 days after the last spring frost.
Zone 7b (5 to 10°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 Port Royal, not a forecast for this year.
Stretching the season past the first frost
With roughly 10 weeks until Port Royal's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
03/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/08 and only about 1 year in 10 sees frost after that.
Port Royal against the rest of the dataset
About 226 days separate Port Royal's last and first frost, putting it 11,310 of 40,283 ZIP codes nationally. Within VA, it ranks 166 of 1,178.
Learn more
Before leaning on 22544's figures: the frost range explains how to read the range around Port Royal's dates instead of trusting one, while local microclimates explains what one yard in Port Royal can differ from the 22544 normal.