Kilkenny, MN 56052 Frost Dates
Frost dates for Kilkenny, MN, ZIP 56052
Around 05/05 is the usual last spring frost, about 250 days away. The first fall frost typically arrives around 10/05, about 152 frost-free days later.
Kilkenny 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
Zone 4b around Kilkenny 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.
Why 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/22 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kilkenny compares
About 152 days separate Kilkenny's last and first frost, putting it 34,911 of 40,283 ZIP codes nationally. Within MN, it ranks 475 of 943.
Learn more
zone vs. frost date explains why Zone 4b and Kilkenny's frost date answer different questions, and the frost range explains how to read the range around Kilkenny's dates instead of trusting one.