Morrisville, VT 05662 Frost Dates
05662, near Morrisville, VT: the frost window
The last spring frost here typically falls around 05/23, about 268 days from today. Fall's first freeze usually shows up around 09/30, roughly 130 days after the last spring frost.
Zone 4b (-25 to -20°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 Morrisville, not a forecast for this year.
Stretching the season past the first frost
Morrisville's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/08 and only about 1 year in 10 sees frost after that.
Morrisville against the rest of the dataset
At roughly 130 frost-free days, Morrisville places 38,377 of 40,283 ZIP codes in this dataset. Within VT, it ranks 282 of 330.
Learn more
Two guides worth reading on 05662: zone vs. frost date, on why Zone 4b and Morrisville's frost date answer different questions, and the frost range, on how to read the range around Morrisville's dates instead of trusting one.