Winchester, VA 22602 Frost Dates
Winchester, VA: when does the frost end?
Around 04/11 is the usual last spring frost, about 226 days away. Fall's first freeze usually shows up around 10/29, roughly 200 days after the last spring frost.
Zone 7a (0 to 5°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 Winchester, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Winchester's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/11 isn't a guarantee
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Winchester against the rest of the dataset
Winchester's growing season runs about 200 days, ranking 17,721 of 40,283 US ZIP codes measured here, longest to shortest. Within VA, it ranks 635 of 1,178.
Learn more
Before leaning on 22602's figures: the frost range explains how to read the range around Winchester's dates instead of trusting one, while local microclimates explains what one yard in Winchester can differ from the 22602 normal.