Richland, MI 49046 Frost Dates
Frost dates for Richland, MI, ZIP 49046
Typically, the last spring freeze lands around 04/29, roughly 244 days out. The first fall frost typically arrives around 10/20, about 173 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 Richland, not a forecast for this year.
What to do before the first frost
Zone 6a around Richland has about 8 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 04/29 isn't a guarantee
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 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 Richland compares
About 173 days separate Richland's last and first frost, putting it 27,996 of 40,283 ZIP codes nationally. Within MI, it ranks 233 of 1,153.
Learn more
local microclimates explains what one yard in Richland can differ from the 49046 normal, and zone vs. frost date explains why Zone 6a and Richland's frost date answer different questions.