West Burke, VT 05858 Frost Dates
05858, near West Burke, VT: the frost window
Around 05/30 is the usual last spring frost, about 275 days away. Fall's first freeze usually shows up around 09/16, roughly 109 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts West Burke in Zone 4b (-25 to -20°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
West Burke's growing season runs out in roughly 3 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 West Burke's last frost
05/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/11 and only about 1 year in 10 sees frost after that.
West Burke against the rest of the dataset
About 109 days separate West Burke's last and first frost, putting it 39,528 of 40,283 ZIP codes nationally. Within VT, it ranks 325 of 330.
Learn more
Two guides worth reading on 05858: local microclimates, on what one yard in West Burke can differ from the 05858 normal, and zone vs. frost date, on why Zone 4b and West Burke's frost date answer different questions.