St. Leon, IN 47035 Frost Dates
When can you plant in St. Leon, IN?
The last spring frost here typically falls around 04/20, about 235 days from today. The first fall frost typically arrives around 10/21, about 182 frost-free days later.
The USDA Plant Hardiness Zone Map puts St. Leon in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in St. Leon before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 and you're betting against frost in roughly 9 years out of 10. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Leon compares
At roughly 182 frost-free days, St. Leon places 24,261 of 40,283 ZIP codes in this dataset. Within IN, it ranks 444 of 927.
Learn more
local microclimates covers what one yard in St. Leon can differ from the 47035 normal. zone vs. frost date covers why Zone 6b and St. Leon's frost date answer different questions.