Onley, VA 23441 Frost Dates
Frost dates for Onley, VA, ZIP 23441
Typically, the last spring freeze lands around 04/04, roughly 219 days out. The first fall frost typically arrives around 11/07, about 216 frost-free days later.
Zone 8a (10 to 15°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 Onley, not a forecast for this year.
What to do before the first frost
Zone 8a around Onley 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.
Why 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/21 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Onley compares
At roughly 216 frost-free days, Onley places 13,878 of 40,283 ZIP codes in this dataset. Within VA, it ranks 319 of 1,178.
Learn more
the frost range explains how to read the range around Onley's dates instead of trusting one, and local microclimates explains what one yard in Onley can differ from the 23441 normal.