Sherburn, MN 56171 Frost Dates
When can you plant in Sherburn, MN?
Typically, the last spring freeze lands around 04/28, roughly 243 days out. The first fall frost typically arrives around 10/08, about 162 frost-free days later.
Sherburn sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 6 weeks of growing season left in Sherburn before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/28 isn't a guarantee
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sherburn compares
About 162 days separate Sherburn's last and first frost, putting it 31,798 of 40,283 ZIP codes nationally. Within MN, it ranks 183 of 943.
Learn more
local microclimates covers what one yard in Sherburn can differ from the 56171 normal. zone vs. frost date covers why Zone 5a and Sherburn's frost date answer different questions.