Warren, MN 56762 Frost Dates
When can you plant in Warren, MN?
The last spring frost here typically falls around 05/05, about 250 days from today. The first fall frost typically arrives around 10/02, about 147 frost-free days later.
The USDA Plant Hardiness Zone Map puts Warren in Zone 4a (-30 to -25°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 Warren 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
05/05 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 Warren compares
About 147 days separate Warren's last and first frost, putting it 35,925 of 40,283 ZIP codes nationally. Within MN, it ranks 608 of 943.
Learn more
local microclimates covers what one yard in Warren can differ from the 56762 normal. zone vs. frost date covers why Zone 4a and Warren's frost date answer different questions.