Colonial Beach, VA 20661 Frost Dates
20661, near Colonial Beach, VA: the frost window
The last spring frost here typically falls around 04/17, about 232 days from today. Fall's first freeze usually shows up around 10/27, roughly 195 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 Colonial Beach, not a forecast for this year.
Stretching the season past the first frost
Colonial Beach's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/02 and only about 1 year in 10 sees frost after that.
Colonial Beach against the rest of the dataset
At roughly 195 frost-free days, Colonial Beach places 19,272 of 40,283 ZIP codes in this dataset. Within VA, it ranks 742 of 1,178.
Learn more
Two guides worth reading on 20661: the frost range, on how to read the range around Colonial Beach's dates instead of trusting one, and local microclimates, on what one yard in Colonial Beach can differ from the 20661 normal.