Kilmarnock, VA 22528 Frost Dates
22528, near Kilmarnock, VA: the frost window
Around 04/01 is the usual last spring frost, about 216 days away. Fall's first freeze usually shows up around 11/10, roughly 223 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Kilmarnock in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Kilmarnock'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.
Kilmarnock against the rest of the dataset
Kilmarnock's growing season runs about 223 days, ranking 12,081 of 40,283 US ZIP codes measured here, longest to shortest. Within VA, it ranks 215 of 1,178.
Learn more
Two guides worth reading on 22528: local microclimates, on what one yard in Kilmarnock can differ from the 22528 normal, and zone vs. frost date, on why Zone 7b and Kilmarnock's frost date answer different questions.