Marlette, MI 48453 Frost Dates
Frost dates for Marlette, MI, ZIP 48453
Around 05/02 is the usual last spring frost, about 247 days away. The first fall frost typically arrives around 10/16, about 165 frost-free days later.
Marlette 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 Marlette has about 7 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.
How much risk comes with planting early here
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 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 Marlette compares
About 165 days separate Marlette's last and first frost, putting it 30,612 of 40,283 ZIP codes nationally. Within MI, it ranks 458 of 1,153.
Learn more
zone vs. frost date explains why Zone 6a and Marlette's frost date answer different questions, and the frost range explains how to read the range around Marlette's dates instead of trusting one.