Milan, NM 87021 Frost Dates
Frost dates for Milan, NM, ZIP 87021
Typically, the last spring freeze lands around 05/24, roughly 269 days out. The first fall frost typically arrives around 10/01, about 129 frost-free days later.
The USDA Plant Hardiness Zone Map puts Milan in Zone 6a (-10 to -5°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 6a around Milan 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.
Why 05/24 isn't a guarantee
05/24 is the middle of 30 years of NOAA records, not a promise. Plant by 05/07 and you're betting against frost in roughly 9 years out of 10. 06/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milan compares
About 129 days separate Milan's last and first frost, putting it 38,462 of 40,283 ZIP codes nationally. Within NM, it ranks 365 of 427.
Learn more
zone vs. frost date explains why Zone 6a and Milan's frost date answer different questions, and the frost range explains how to read the range around Milan's dates instead of trusting one.