Leonard, MN 56652 Frost Dates
When can you plant in Leonard, MN?
Typically, the last spring freeze lands around 05/12, roughly 257 days out. The first fall frost typically arrives around 10/04, about 142 frost-free days later.
Zone 3b (-35 to -30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Leonard, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in Leonard 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
05/12 is the middle of 30 years of NOAA records, not a promise. Plant by 04/29 and you're betting against frost in roughly 9 years out of 10. 05/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Leonard compares
At roughly 142 frost-free days, Leonard places 36,851 of 40,283 ZIP codes in this dataset. Within MN, it ranks 708 of 943.
Learn more
zone vs. frost date covers why Zone 3b and Leonard's frost date answer different questions. the frost range covers how to read the range around Leonard's dates instead of trusting one.