Burlington, VT 05408 Frost Dates
Burlington, VT: when does the frost end?
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/15, roughly 169 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Burlington in Zone 5b (-15 to -10°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
With roughly 7 weeks until Burlington's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Burlington's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Burlington against the rest of the dataset
About 169 days separate Burlington's last and first frost, putting it 29,322 of 40,283 ZIP codes nationally. Within VT, it ranks 3 of 330.
Learn more
Before leaning on 05408's figures: local microclimates explains what one yard in Burlington can differ from the 05408 normal, while zone vs. frost date explains why Zone 5b and Burlington's frost date answer different questions.