New Auburn, MN 55366 Frost Dates
When can you plant in New Auburn, MN?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/04, about 156 frost-free days later.
The USDA Plant Hardiness Zone Map puts New Auburn in Zone 4b (-25 to -20°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 5 weeks of growing season left in New Auburn before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Auburn compares
At roughly 156 frost-free days, New Auburn places 33,803 of 40,283 ZIP codes in this dataset. Within MN, it ranks 335 of 943.
Learn more
local microclimates covers what one yard in New Auburn can differ from the 55366 normal. zone vs. frost date covers why Zone 4b and New Auburn's frost date answer different questions.