South Bend, IN 46626 Frost Dates
When can you plant in South Bend, IN?
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/19, about 170 frost-free days later.
The USDA Plant Hardiness Zone Map puts South Bend 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 South Bend 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
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How South Bend compares
About 170 days separate South Bend's last and first frost, putting it 28,879 of 40,283 ZIP codes nationally. Within IN, it ranks 796 of 927.
Learn more
zone vs. frost date covers why Zone 6a and South Bend's frost date answer different questions. the frost range covers how to read the range around South Bend's dates instead of trusting one.