Smithfield, WV 26339 Frost Dates
26339, near Smithfield, WV: the frost window
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/10, roughly 159 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Smithfield in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Smithfield's growing season runs out in roughly 6 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 Smithfield's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Smithfield against the rest of the dataset
At roughly 159 frost-free days, Smithfield places 32,803 of 40,283 ZIP codes in this dataset. Within WV, it ranks 784 of 885.
Learn more
Two guides worth reading on 26339: local microclimates, on what one yard in Smithfield can differ from the 26339 normal, and zone vs. frost date, on why Zone 6b and Smithfield's frost date answer different questions.