Newport, VT 05855 Frost Dates
Frost dates for Newport, VT, ZIP 05855
Typically, the last spring freeze lands around 05/14, roughly 259 days out. The first fall frost typically arrives around 09/30, about 138 frost-free days later.
The USDA Plant Hardiness Zone Map puts Newport 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 Newport 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 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Newport compares
At roughly 138 frost-free days, Newport places 37,384 of 40,283 ZIP codes in this dataset. Within VT, it ranks 188 of 330.
Learn more
local microclimates explains what one yard in Newport can differ from the 05855 normal, and zone vs. frost date explains why Zone 4b and Newport's frost date answer different questions.