Morrisville, VT 05672 Frost Dates
Frost dates for Morrisville, VT, ZIP 05672
Around 05/20 is the usual last spring frost, about 265 days away. The first fall frost typically arrives around 09/28, about 129 frost-free days later.
Zone 5a (-20 to -15°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.
What to do before the first frost
Zone 5a around Morrisville has about 4 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 05/20 isn't a guarantee
05/20 is the middle of 30 years of NOAA records, not a promise. Plant by 05/06 and you're betting against frost in roughly 9 years out of 10. 06/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Morrisville compares
Morrisville's growing season runs about 129 days, ranking 38,466 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 288 of 330.
Learn more
zone vs. frost date explains why Zone 5a and Morrisville's frost date answer different questions, and the frost range explains how to read the range around Morrisville's dates instead of trusting one.