Vienna, VA 22102 Frost Dates
Vienna, VA: when does the frost end?
Typically, the last spring freeze lands around 04/14, roughly 229 days out. Fall's first freeze usually shows up around 10/29, roughly 198 days after the last spring frost.
Vienna sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 9 weeks until Vienna's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/14 isn't a guarantee
04/14 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 04/28 and only about 1 year in 10 sees frost after that.
Vienna against the rest of the dataset
Vienna's growing season runs about 198 days, ranking 18,365 of 40,283 US ZIP codes measured here, longest to shortest. Within VA, it ranks 693 of 1,178.
Learn more
Before leaning on 22102's figures: the frost range explains how to read the range around Vienna's dates instead of trusting one, while local microclimates explains what one yard in Vienna can differ from the 22102 normal.