Westminster, VT 05158 Frost Dates
Frost dates for Westminster, VT, ZIP 05158
Typically, the last spring freeze lands around 05/08, roughly 253 days out. The first fall frost typically arrives around 10/03, about 149 frost-free days later.
The USDA Plant Hardiness Zone Map puts Westminster in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 5b around Westminster has about 5 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.
How much risk comes with planting early here
05/08 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Westminster compares
About 149 days separate Westminster's last and first frost, putting it 35,570 of 40,283 ZIP codes nationally. Within VT, it ranks 81 of 330.
Learn more
the frost range explains how to read the range around Westminster's dates instead of trusting one, and local microclimates explains what one yard in Westminster can differ from the 05158 normal.