Michigan City, IN 46360 Frost Dates
When can you plant in Michigan City, IN?
Typically, the last spring freeze lands around 04/19, roughly 234 days out. The first fall frost typically arrives around 10/27, about 191 frost-free days later.
Michigan City sits in USDA Zone 6a (-10 to -5°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.
What to do before the first frost
About 9 weeks of growing season left in Michigan City 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
04/19 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Michigan City compares
Michigan City's growing season runs about 191 days, ranking 20,705 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 232 of 927.
Learn more
zone vs. frost date covers why Zone 6a and Michigan City's frost date answer different questions. the frost range covers how to read the range around Michigan City's dates instead of trusting one.