New Haven, MI 48051 Frost Dates
New Haven, MI: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/24, roughly 174 days after the last spring frost.
New Haven 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
With roughly 8 weeks until New Haven's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around New Haven's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
New Haven against the rest of the dataset
At roughly 174 frost-free days, New Haven places 27,434 of 40,283 ZIP codes in this dataset. Within MI, it ranks 183 of 1,153.
Learn more
Before leaning on 48051's figures: local microclimates explains what one yard in New Haven can differ from the 48051 normal, while zone vs. frost date explains why Zone 6b and New Haven's frost date answer different questions.