New Haven, IN 46774 Frost Dates
When can you plant in New Haven, IN?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. The first fall frost typically arrives around 10/19, about 174 frost-free days later.
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.
What to do before the first frost
About 7 weeks of growing season left in New Haven before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Haven compares
At roughly 174 frost-free days, New Haven places 27,382 of 40,283 ZIP codes in this dataset. Within IN, it ranks 655 of 927.
Learn more
local microclimates covers what one yard in New Haven can differ from the 46774 normal. zone vs. frost date covers why Zone 6a and New Haven's frost date answer different questions.