Blacksburg, VA 24128 Frost Dates
Frost dates for Blacksburg, VA, ZIP 24128
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.
The USDA Plant Hardiness Zone Map puts Blacksburg 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 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.
Why 04/24 isn't a guarantee
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
Blacksburg's growing season runs about 175 days, ranking 26,743 of 40,283 US ZIP codes measured here, longest to shortest. Within VA, it ranks 1,052 of 1,178.
Learn more
zone vs. frost date explains why Zone 7a and Blacksburg's frost date answer different questions, and the frost range explains how to read the range around Blacksburg's dates instead of trusting one.