Vergennes, VT 12960 Frost Dates
Vergennes, VT: when does the frost end?
The last spring frost here typically falls around 05/05, about 250 days from today. Fall's first freeze usually shows up around 10/03, roughly 151 days after the last spring frost.
Vergennes sits in USDA Zone 4b (-25 to -20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 5 weeks until Vergennes's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Vergennes against the rest of the dataset
Vergennes's growing season runs about 151 days, ranking 35,037 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 67 of 330.
Learn more
Before leaning on 12960's figures: local microclimates explains what one yard in Vergennes can differ from the 12960 normal, while zone vs. frost date explains why Zone 4b and Vergennes's frost date answer different questions.