Mishawaka, IN 46545 Frost Dates
Mishawaka, IN: when does the frost end?
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 Mishawaka, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Mishawaka's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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.
Mishawaka against the rest of the dataset
At roughly 170 frost-free days, Mishawaka places 28,891 of 40,283 ZIP codes in this dataset. Within IN, it ranks 799 of 927.
Learn more
Before leaning on 46545's figures: local microclimates explains what one yard in Mishawaka can differ from the 46545 normal, while zone vs. frost date explains why Zone 6a and Mishawaka's frost date answer different questions.