Warren, MI 48093 Frost Dates
48093, near Warren, 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.
Warren sits in USDA Zone 6b (-5 to 0°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.
Stretching the season past the first frost
Warren'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 Warren'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.
Warren against the rest of the dataset
About 190 days separate Warren's last and first frost, putting it 20,967 of 40,283 ZIP codes nationally. Within MI, it ranks 18 of 1,153.
Learn more
Two guides worth reading on 48093: local microclimates, on what one yard in Warren can differ from the 48093 normal, and zone vs. frost date, on why Zone 6b and Warren's frost date answer different questions.