Manassas, VA 20182 Frost Dates
Manassas, VA: when does the frost end?
Around 04/15 is the usual last spring frost, about 230 days away. Fall's first freeze usually shows up around 10/24, roughly 194 days after the last spring frost.
Manassas sits in USDA Zone 7a (0 to 5°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 8 weeks until Manassas's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Manassas's last frost
04/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Manassas against the rest of the dataset
Manassas's growing season runs about 194 days, ranking 19,425 of 40,283 US ZIP codes measured here, longest to shortest. Within VA, it ranks 753 of 1,178.
Learn more
Before leaning on 20182's figures: local microclimates explains what one yard in Manassas can differ from the 20182 normal, while zone vs. frost date explains why Zone 7a and Manassas's frost date answer different questions.