Alberta, MN 56207 Frost Dates
When can you plant in Alberta, MN?
Typically, the last spring freeze lands around 05/04, roughly 249 days out. The first fall frost typically arrives around 10/01, about 150 frost-free days later.
Alberta sits in USDA Zone 4b (-25 to -20°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 5 weeks of growing season left in Alberta 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
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Alberta compares
About 150 days separate Alberta's last and first frost, putting it 35,455 of 40,283 ZIP codes nationally. Within MN, it ranks 553 of 943.
Learn more
local microclimates covers what one yard in Alberta can differ from the 56207 normal. zone vs. frost date covers why Zone 4b and Alberta's frost date answer different questions.