Port Royal, VA 22481 Frost Dates
Port Royal, VA: when does the frost end?
Typically, the last spring freeze lands around 03/28, roughly 212 days out. 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.
The actual range around Port Royal's last frost
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
At roughly 226 frost-free days, Port Royal places 11,305 of 40,283 ZIP codes in this dataset. Within VA, it ranks 161 of 1,178.
Learn more
Before leaning on 22481's figures: local microclimates explains what one yard in Port Royal can differ from the 22481 normal, while zone vs. frost date explains why Zone 7b and Port Royal's frost date answer different questions.