Mishawaka, IN 46544 Frost Dates
Frost dates for Mishawaka, IN, ZIP 46544
The last spring frost here typically falls around 05/01, about 246 days from today. The first fall frost typically arrives around 10/19, about 170 frost-free days later.
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.
What to do before the first frost
Zone 6a around Mishawaka has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
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 28,890 of 40,283 ZIP codes nationally. Within IN, it ranks 798 of 927.
Learn more
the frost range explains how to read the range around Mishawaka's dates instead of trusting one, and local microclimates explains what one yard in Mishawaka can differ from the 46544 normal.