Johnson, VT 05665 Frost Dates
Johnson, VT: when does the frost end?
The last spring frost here typically falls around 05/09, about 254 days from today. Fall's first freeze usually shows up around 10/01, roughly 142 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Johnson in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 5 weeks until Johnson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/24 and only about 1 year in 10 sees frost after that.
Johnson against the rest of the dataset
About 142 days separate Johnson's last and first frost, putting it 36,765 of 40,283 ZIP codes nationally. Within VT, it ranks 141 of 330.
Learn more
Before leaning on 05665's figures: local microclimates explains what one yard in Johnson can differ from the 05665 normal, while zone vs. frost date explains why Zone 4b and Johnson's frost date answer different questions.