Farmington, NM 87418 Frost Dates
Frost dates for Farmington, NM, ZIP 87418
Typically, the last spring freeze lands around 05/12, roughly 257 days out. The first fall frost typically arrives around 10/06, about 147 frost-free days later.
Zone 6b (-5 to 0°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 Farmington, not a forecast for this year.
What to do before the first frost
Zone 6b around Farmington has about 6 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 05/12 isn't a guarantee
05/12 is the middle of 30 years of NOAA records, not a promise. Plant by 04/29 and you're betting against frost in roughly 9 years out of 10. 05/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Farmington compares
About 147 days separate Farmington's last and first frost, putting it 35,837 of 40,283 ZIP codes nationally. Within NM, it ranks 296 of 427.
Learn more
zone vs. frost date explains why Zone 6b and Farmington's frost date answer different questions, and the frost range explains how to read the range around Farmington's dates instead of trusting one.