Grosse Pointe Park, MI 48214 Frost Dates
48214, near Grosse Pointe Park, MI: the frost window
Typically, the last spring freeze lands around 04/21, roughly 236 days out. Fall's first freeze usually shows up around 10/31, roughly 190 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Grosse Pointe Park 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
Grosse Pointe Park's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Grosse Pointe Park's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Grosse Pointe Park against the rest of the dataset
At roughly 190 frost-free days, Grosse Pointe Park places 21,091 of 40,283 ZIP codes in this dataset. Within MI, it ranks 35 of 1,153.
Learn more
Two guides worth reading on 48214: zone vs. frost date, on why Zone 6b and Grosse Pointe Park's frost date answer different questions, and the frost range, on how to read the range around Grosse Pointe Park's dates instead of trusting one.