Sacred Heart, MN 56285 Frost Dates
Frost dates for Sacred Heart, MN, ZIP 56285
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/01, about 150 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sacred Heart 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 Sacred Heart has about 5 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 Sacred Heart's last frost
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. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sacred Heart compares
About 150 days separate Sacred Heart's last and first frost, putting it 35,376 of 40,283 ZIP codes nationally. Within MN, it ranks 530 of 943.
Learn more
zone vs. frost date explains why Zone 4b and Sacred Heart's frost date answer different questions, and the frost range explains how to read the range around Sacred Heart's dates instead of trusting one.