Burton, MI 48509 Frost Dates
Frost dates for Burton, MI, ZIP 48509
Around 05/08 is the usual last spring frost, about 253 days away. The first fall frost typically arrives around 10/05, about 148 frost-free days later.
Burton sits in USDA Zone 6a (-10 to -5°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 6a around Burton 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 Burton's last frost
05/08 is the middle of 30 years of NOAA records, not a promise. Plant by 04/28 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Burton compares
At roughly 148 frost-free days, Burton places 35,635 of 40,283 ZIP codes in this dataset. Within MI, it ranks 830 of 1,153.
Learn more
zone vs. frost date explains why Zone 6a and Burton's frost date answer different questions, and the frost range explains how to read the range around Burton's dates instead of trusting one.