Colonial Beach, VA 20664 Frost Dates
Frost dates for Colonial Beach, VA, ZIP 20664
The last spring frost here typically falls around 04/17, about 232 days from today. The first fall frost typically arrives around 10/27, about 195 frost-free days later.
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.
What to do before the first frost
Zone 7b around Colonial Beach has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Colonial Beach compares
At roughly 195 frost-free days, Colonial Beach places 19,273 of 40,283 ZIP codes in this dataset. Within VA, it ranks 743 of 1,178.
Learn more
the frost range explains how to read the range around Colonial Beach's dates instead of trusting one, and local microclimates explains what one yard in Colonial Beach can differ from the 20664 normal.