Rose City, MI 48743 Frost Dates
Rose City, MI: when does the frost end?
The last spring frost here typically falls around 05/21, about 266 days from today. Fall's first freeze usually shows up around 09/29, roughly 129 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Rose City in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 5 weeks until Rose City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/05 and only about 1 year in 10 sees frost after that.
Rose City against the rest of the dataset
About 129 days separate Rose City's last and first frost, putting it 38,482 of 40,283 ZIP codes nationally. Within MI, it ranks 1,042 of 1,153.
Learn more
Before leaning on 48743's figures: the frost range explains how to read the range around Rose City's dates instead of trusting one, while local microclimates explains what one yard in Rose City can differ from the 48743 normal.