Ada, MN 56510 Frost Dates
When can you plant in Ada, MN?
The last spring frost here typically falls around 05/11, about 256 days from today. The first fall frost typically arrives around 09/27, about 137 frost-free days later.
Zone 4a (-30 to -25°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 Ada, not a forecast for this year.
What to do before the first frost
About 4 weeks of growing season left in Ada 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
05/11 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ada compares
At roughly 137 frost-free days, Ada places 37,522 of 40,283 ZIP codes in this dataset. Within MN, it ranks 780 of 943.
Learn more
local microclimates covers what one yard in Ada can differ from the 56510 normal. zone vs. frost date covers why Zone 4a and Ada's frost date answer different questions.