Alexandria, VA 22331 Frost Dates
Alexandria, VA: when does the frost end?
Typically, the last spring freeze lands around 03/24, roughly 208 days out. Fall's first freeze usually shows up around 11/18, roughly 241 days after the last spring frost.
Alexandria sits in USDA Zone 8a (10 to 15°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 12 weeks until Alexandria's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Alexandria's last frost
03/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/06 and only about 1 year in 10 sees frost after that.
Alexandria against the rest of the dataset
About 241 days separate Alexandria's last and first frost, putting it 8,492 of 40,283 ZIP codes nationally. Within VA, it ranks 37 of 1,178.
Learn more
Before leaning on 22331's figures: zone vs. frost date explains why Zone 8a and Alexandria's frost date answer different questions, while the frost range explains how to read the range around Alexandria's dates instead of trusting one.