Blacksburg, VA 24087 Frost Dates
Frost dates for Blacksburg, VA, ZIP 24087
Around 04/24 is the usual last spring frost, about 239 days away. The first fall frost typically arrives around 10/19, about 175 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 Blacksburg, not a forecast for this year.
What to do before the first frost
Zone 7b around Blacksburg has about 7 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.
The actual range around Blacksburg's last frost
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Blacksburg compares
About 175 days separate Blacksburg's last and first frost, putting it 26,742 of 40,283 ZIP codes nationally. Within VA, it ranks 1,051 of 1,178.
Learn more
local microclimates explains what one yard in Blacksburg can differ from the 24087 normal, and zone vs. frost date explains why Zone 7b and Blacksburg's frost date answer different questions.