Henderson, MN 56044 Frost Dates
When can you plant in Henderson, MN?
Around 04/24 is the usual last spring frost, about 239 days away. The first fall frost typically arrives around 10/15, about 170 frost-free days later.
The USDA Plant Hardiness Zone Map puts Henderson 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 7 weeks of growing season left in Henderson 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
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/09 and you're betting against frost in roughly 9 years out of 10. 05/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Henderson compares
About 170 days separate Henderson's last and first frost, putting it 29,121 of 40,283 ZIP codes nationally. Within MN, it ranks 84 of 943.
Learn more
zone vs. frost date covers why Zone 4b and Henderson's frost date answer different questions. the frost range covers how to read the range around Henderson's dates instead of trusting one.