Wells River, VT 05821 Frost Dates
Frost dates for Wells River, VT, ZIP 05821
Typically, the last spring freeze lands around 05/13, roughly 258 days out. The first fall frost typically arrives around 10/03, about 143 frost-free days later.
The USDA Plant Hardiness Zone Map puts Wells River in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 4b around Wells River 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 05/13 isn't a guarantee
05/13 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Wells River compares
Wells River's growing season runs about 143 days, ranking 36,604 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 107 of 330.
Learn more
local microclimates explains what one yard in Wells River can differ from the 05821 normal, and zone vs. frost date explains why Zone 4b and Wells River's frost date answer different questions.