New Haven, IN 46859 Frost Dates
When can you plant in New Haven, IN?
Around 04/24 is the usual last spring frost, about 239 days away. The first fall frost typically arrives around 10/21, about 178 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for New Haven, not a forecast for this year.
What to do before the first frost
About 8 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
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Haven compares
At roughly 178 frost-free days, New Haven places 25,606 of 40,283 ZIP codes in this dataset. Within IN, it ranks 565 of 927.
Learn more
the frost range covers how to read the range around New Haven's dates instead of trusting one. local microclimates covers what one yard in New Haven can differ from the 46859 normal.