Mishawaka, IN 46546 Frost Dates
When can you plant in Mishawaka, IN?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/19, about 170 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mishawaka 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 Mishawaka before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Mishawaka's last frost
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 Mishawaka compares
About 170 days separate Mishawaka's last and first frost, putting it 28,892 of 40,283 ZIP codes nationally. Within IN, it ranks 800 of 927.
Learn more
the frost range covers how to read the range around Mishawaka's dates instead of trusting one. local microclimates covers what one yard in Mishawaka can differ from the 46546 normal.