Brownstown, IN 47220 Frost Dates
47220, near Brownstown, IN: the frost window
The last spring frost here typically falls around 04/16, about 231 days from today. Fall's first freeze usually shows up around 10/21, roughly 187 days after the last spring frost.
Zone 6b (-5 to 0°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 Brownstown, not a forecast for this year.
Stretching the season past the first frost
Brownstown's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Brownstown's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/02 and only about 1 year in 10 sees frost after that.
Brownstown against the rest of the dataset
About 187 days separate Brownstown's last and first frost, putting it 22,390 of 40,283 ZIP codes nationally. Within IN, it ranks 305 of 927.
Learn more
Two guides worth reading on 47220: the frost range, on how to read the range around Brownstown's dates instead of trusting one, and local microclimates, on what one yard in Brownstown can differ from the 47220 normal.