Charlestown, IN 47163 Frost Dates
When can you plant in Charlestown, IN?
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 10/20, about 185 frost-free days later.
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 Charlestown, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Charlestown 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
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Charlestown compares
Charlestown's growing season runs about 185 days, ranking 23,115 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 367 of 927.
Learn more
zone vs. frost date covers why Zone 6b and Charlestown's frost date answer different questions. the frost range covers how to read the range around Charlestown's dates instead of trusting one.