Augusta, MI 49016 Frost Dates
Frost dates for Augusta, MI, ZIP 49016
The last spring frost here typically falls around 05/06, about 251 days from today. The first fall frost typically arrives around 10/12, about 158 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Augusta, not a forecast for this year.
What to do before the first frost
Zone 6a around Augusta 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.
Why 05/06 isn't a guarantee
05/06 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. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Augusta compares
About 158 days separate Augusta's last and first frost, putting it 33,079 of 40,283 ZIP codes nationally. Within MI, it ranks 675 of 1,153.
Learn more
zone vs. frost date explains why Zone 6a and Augusta's frost date answer different questions, and the frost range explains how to read the range around Augusta's dates instead of trusting one.