Charlestown, IN 47190 Frost Dates
Frost dates for Charlestown, IN, ZIP 47190
Typically, the last spring freeze lands around 03/31, roughly 215 days out. The first fall frost typically arrives around 11/09, about 225 frost-free days later.
The USDA Plant Hardiness Zone Map puts Charlestown in Zone 7a (0 to 5°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
Zone 7a around Charlestown has about 10 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Charlestown compares
About 225 days separate Charlestown's last and first frost, putting it 11,394 of 40,283 ZIP codes nationally. Within IN, it ranks 9 of 927.
Learn more
zone vs. frost date explains why Zone 7a and Charlestown's frost date answer different questions, and the frost range explains how to read the range around Charlestown's dates instead of trusting one.