Millville, MN 55957 Frost Dates
When can you plant in Millville, MN?
The last spring frost here typically falls around 05/07, about 252 days from today. The first fall frost typically arrives around 10/02, about 148 frost-free days later.
The USDA Plant Hardiness Zone Map puts Millville 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 Millville 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
05/07 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 Millville compares
About 148 days separate Millville's last and first frost, putting it 35,812 of 40,283 ZIP codes nationally. Within MN, it ranks 602 of 943.
Learn more
zone vs. frost date covers why Zone 4b and Millville's frost date answer different questions. the frost range covers how to read the range around Millville's dates instead of trusting one.