North Troy, VT 05868 Frost Dates
North Troy, VT: when does the frost end?
Typically, the last spring freeze lands around 05/14, roughly 259 days out. Fall's first freeze usually shows up around 09/30, roughly 138 days after the last spring frost.
North Troy 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 North Troy's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
North Troy against the rest of the dataset
At roughly 138 frost-free days, North Troy places 37,439 of 40,283 ZIP codes in this dataset. Within VT, it ranks 197 of 330.
Learn more
Before leaning on 05868's figures: local microclimates explains what one yard in North Troy can differ from the 05868 normal, while zone vs. frost date explains why Zone 4b and North Troy's frost date answer different questions.