Michigantown, IN 46057 Frost Dates
46057, near Michigantown, IN: the frost window
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/18, roughly 174 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 Michigantown, not a forecast for this year.
Stretching the season past the first frost
Michigantown'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.
How much risk comes with planting early here
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Michigantown against the rest of the dataset
Michigantown's growing season runs about 174 days, ranking 27,600 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 686 of 927.
Learn more
Two guides worth reading on 46057: local microclimates, on what one yard in Michigantown can differ from the 46057 normal, and zone vs. frost date, on why Zone 6a and Michigantown's frost date answer different questions.