Southfield, MI 48033 Frost Dates
Southfield, MI: when does the frost end?
Around 05/01 is the usual last spring frost, about 246 days away. Fall's first freeze usually shows up around 10/17, roughly 165 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Southfield in Zone 6b (-5 to 0°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 7 weeks until Southfield'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
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/16 and only about 1 year in 10 sees frost after that.
Southfield against the rest of the dataset
At roughly 165 frost-free days, Southfield places 30,485 of 40,283 ZIP codes in this dataset. Within MI, it ranks 430 of 1,153.
Learn more
Before leaning on 48033's figures: local microclimates explains what one yard in Southfield can differ from the 48033 normal, while zone vs. frost date explains why Zone 6b and Southfield's frost date answer different questions.