South Bend, IN 46614 Frost Dates
46614, near South Bend, IN: the frost window
The last spring frost here typically falls around 05/01, about 246 days from today. Fall's first freeze usually shows up around 10/19, roughly 170 days after the last spring frost.
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 South Bend, not a forecast for this year.
Stretching the season past the first frost
South Bend's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/01 isn't a guarantee
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
South Bend against the rest of the dataset
About 170 days separate South Bend's last and first frost, putting it 28,875 of 40,283 ZIP codes nationally. Within IN, it ranks 792 of 927.
Learn more
Two guides worth reading on 46614: the frost range, on how to read the range around South Bend's dates instead of trusting one, and local microclimates, on what one yard in South Bend can differ from the 46614 normal.