Warren Park, IN 46226 Frost Dates
Warren Park, IN: when does the frost end?
Typically, the last spring freeze lands around 04/18, roughly 233 days out. Fall's first freeze usually shows up around 10/26, roughly 190 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 Warren Park, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Warren Park's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/18 isn't a guarantee
04/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Warren Park against the rest of the dataset
Warren Park's growing season runs about 190 days, ranking 21,218 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 267 of 927.
Learn more
Before leaning on 46226's figures: the frost range explains how to read the range around Warren Park's dates instead of trusting one, while local microclimates explains what one yard in Warren Park can differ from the 46226 normal.