South Rockwood, MI 48179 Frost Dates
South Rockwood, MI: when does the frost end?
The last spring frost here typically falls around 04/27, about 242 days from today. Fall's first freeze usually shows up around 10/20, roughly 176 days after the last spring frost.
Zone 6b (-5 to 0°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 South Rockwood, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until South Rockwood's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around South Rockwood's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
South Rockwood against the rest of the dataset
South Rockwood's growing season runs about 176 days, ranking 26,506 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 123 of 1,153.
Learn more
Before leaning on 48179's figures: local microclimates explains what one yard in South Rockwood can differ from the 48179 normal, while zone vs. frost date explains why Zone 6b and South Rockwood's frost date answer different questions.