Dumfries, VA 22172 Frost Dates
Frost dates for Dumfries, VA, ZIP 22172
The last spring frost here typically falls around 03/28, about 212 days from today. The first fall frost typically arrives around 11/08, about 226 frost-free days later.
The USDA Plant Hardiness Zone Map puts Dumfries in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 7a around Dumfries has about 10 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.
How much risk comes with planting early here
03/28 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dumfries compares
About 226 days separate Dumfries's last and first frost, putting it 11,189 of 40,283 ZIP codes nationally. Within VA, it ranks 142 of 1,178.
Learn more
local microclimates explains what one yard in Dumfries can differ from the 22172 normal, and zone vs. frost date explains why Zone 7a and Dumfries's frost date answer different questions.