Farmington, IA 52626 Frost Dates
When can you plant in Farmington, IA?
Typically, the last spring freeze lands around 04/17, roughly 232 days out. The first fall frost typically arrives around 10/22, about 187 frost-free days later.
The USDA Plant Hardiness Zone Map puts Farmington 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
About 8 weeks of growing season left in Farmington before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Farmington compares
About 187 days separate Farmington's last and first frost, putting it 22,543 of 40,283 ZIP codes nationally. Within IA, it ranks 20 of 1,042.
Learn more
the frost range covers how to read the range around Farmington's dates instead of trusting one. local microclimates covers what one yard in Farmington can differ from the 52626 normal.