Vergennes, VT 12950 Frost Dates
Frost dates for Vergennes, VT, ZIP 12950
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/04, about 152 frost-free days later.
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 Vergennes, not a forecast for this year.
What to do before the first frost
Zone 5a 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.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Vergennes compares
Vergennes's growing season runs about 152 days, ranking 34,767 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 59 of 330.
Learn more
local microclimates explains what one yard in Vergennes can differ from the 12950 normal, and zone vs. frost date explains why Zone 5a and Vergennes's frost date answer different questions.