New Haven, IN 46852 Frost Dates
New Haven, IN: when does the frost end?
The last spring frost here typically falls around 04/24, about 239 days from today. Fall's first freeze usually shows up around 10/21, roughly 178 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts New Haven in Zone 6a (-10 to -5°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 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
04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
New Haven against the rest of the dataset
At roughly 178 frost-free days, New Haven places 25,599 of 40,283 ZIP codes in this dataset. Within IN, it ranks 558 of 927.
Learn more
Before leaning on 46852's figures: local microclimates explains what one yard in New Haven can differ from the 46852 normal, while zone vs. frost date explains why Zone 6a and New Haven's frost date answer different questions.