Avon, MN 56310 Frost Dates
Frost dates for Avon, MN, ZIP 56310
The last spring frost here typically falls around 05/03, about 248 days from today. The first fall frost typically arrives around 10/07, about 155 frost-free days later.
The USDA Plant Hardiness Zone Map puts Avon 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
Zone 4b around Avon has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Avon's last frost
05/03 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 Avon compares
About 155 days separate Avon's last and first frost, putting it 34,000 of 40,283 ZIP codes nationally. Within MN, it ranks 355 of 943.
Learn more
local microclimates explains what one yard in Avon can differ from the 56310 normal, and zone vs. frost date explains why Zone 4b and Avon's frost date answer different questions.