Harrisonburg, VA 22846 Frost Dates
22846, near Harrisonburg, VA: the frost window
Typically, the last spring freeze lands around 04/21, roughly 236 days out. Fall's first freeze usually shows up around 10/23, roughly 182 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 Harrisonburg, not a forecast for this year.
Stretching the season past the first frost
Harrisonburg's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Harrisonburg's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Harrisonburg against the rest of the dataset
About 182 days separate Harrisonburg's last and first frost, putting it 24,074 of 40,283 ZIP codes nationally. Within VA, it ranks 973 of 1,178.
Learn more
Two guides worth reading on 22846: the frost range, on how to read the range around Harrisonburg's dates instead of trusting one, and local microclimates, on what one yard in Harrisonburg can differ from the 22846 normal.