Morrisville, VT 05680 Frost Dates
05680, near Morrisville, VT: the frost window
The last spring frost here typically falls around 05/20, about 265 days from today. Fall's first freeze usually shows up around 09/28, roughly 129 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 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Morrisville's last frost
05/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/04 and only about 1 year in 10 sees frost after that.
Morrisville against the rest of the dataset
Morrisville's growing season runs about 129 days, ranking 38,467 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 289 of 330.
Learn more
Two guides worth reading on 05680: local microclimates, on what one yard in Morrisville can differ from the 05680 normal, and zone vs. frost date, on why Zone 4b and Morrisville's frost date answer different questions.