Petersburg, WV 26855 Frost Dates
Frost dates for Petersburg, WV, ZIP 26855
Around 04/23 is the usual last spring frost, about 238 days away. The first fall frost typically arrives around 10/20, about 179 frost-free days later.
The USDA Plant Hardiness Zone Map puts Petersburg 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 Petersburg has about 8 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 Petersburg's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Petersburg compares
About 179 days separate Petersburg's last and first frost, putting it 25,336 of 40,283 ZIP codes nationally. Within WV, it ranks 544 of 885.
Learn more
zone vs. frost date explains why Zone 7a and Petersburg's frost date answer different questions, and the frost range explains how to read the range around Petersburg's dates instead of trusting one.