New Haven, IN 46853 Frost Dates
Frost dates for New Haven, IN, ZIP 46853
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.
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
Zone 6a around New Haven has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/24 isn't a guarantee
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 25,600 of 40,283 ZIP codes in this dataset. Within IN, it ranks 559 of 927.
Learn more
zone vs. frost date explains why Zone 6a and New Haven's frost date answer different questions, and the frost range explains how to read the range around New Haven's dates instead of trusting one.