Rose City, MI 48654 Frost Dates
Frost dates for Rose City, MI, ZIP 48654
The last spring frost here typically falls around 05/21, about 266 days from today. The first fall frost typically arrives around 09/29, about 129 frost-free days later.
Rose City sits in USDA Zone 5a (-20 to -15°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 5a around Rose City 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 Rose City's last frost
05/21 is the middle of 30 years of NOAA records, not a promise. Plant by 05/05 and you're betting against frost in roughly 9 years out of 10. 06/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rose City compares
At roughly 129 frost-free days, Rose City places 38,481 of 40,283 ZIP codes in this dataset. Within MI, it ranks 1,041 of 1,153.
Learn more
the frost range explains how to read the range around Rose City's dates instead of trusting one, and local microclimates explains what one yard in Rose City can differ from the 48654 normal.