Markle, IN 46770 Frost Dates
Markle, IN: when does the frost end?
Around 04/24 is the usual last spring frost, about 239 days away. Fall's first freeze usually shows up around 10/21, roughly 178 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 Markle, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Markle's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/24 isn't a guarantee
04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Markle against the rest of the dataset
At roughly 178 frost-free days, Markle places 25,813 of 40,283 ZIP codes in this dataset. Within IN, it ranks 596 of 927.
Learn more
Before leaning on 46770's figures: local microclimates explains what one yard in Markle can differ from the 46770 normal, while zone vs. frost date explains why Zone 6a and Markle's frost date answer different questions.