Vergennes, VT 12998 Frost Dates
Frost dates for Vergennes, VT, ZIP 12998
The last spring frost here typically falls around 05/05, about 250 days from today. The first fall frost typically arrives around 10/03, about 151 frost-free days later.
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.
What to do before the first frost
Zone 4b around Vergennes has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Vergennes's last frost
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Vergennes compares
Vergennes's growing season runs about 151 days, ranking 35,042 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 72 of 330.
Learn more
local microclimates explains what one yard in Vergennes can differ from the 12998 normal, and zone vs. frost date explains why Zone 4b and Vergennes's frost date answer different questions.