Newbury, VT 03251 Frost Dates
Newbury, VT: when does the frost end?
Around 05/07 is the usual last spring frost, about 252 days away. Fall's first freeze usually shows up around 10/04, roughly 149 days after the last spring frost.
Zone 5a (-20 to -15°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 Newbury, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Newbury's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/07 isn't a guarantee
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Newbury against the rest of the dataset
About 149 days separate Newbury's last and first frost, putting it 35,560 of 40,283 ZIP codes nationally. Within VT, it ranks 78 of 330.
Learn more
Before leaning on 03251's figures: local microclimates explains what one yard in Newbury can differ from the 03251 normal, while zone vs. frost date explains why Zone 5a and Newbury's frost date answer different questions.