Corydon, IN 47107 Frost Dates
Frost dates for Corydon, IN, ZIP 47107
Typically, the last spring freeze lands around 04/19, roughly 234 days out. The first fall frost typically arrives around 10/24, about 186 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 Corydon, not a forecast for this year.
What to do before the first frost
Zone 6b around Corydon has about 8 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.
The actual range around Corydon's last frost
04/19 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. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Corydon compares
About 186 days separate Corydon's last and first frost, putting it 22,808 of 40,283 ZIP codes nationally. Within IN, it ranks 329 of 927.
Learn more
local microclimates explains what one yard in Corydon can differ from the 47107 normal, and zone vs. frost date explains why Zone 6b and Corydon's frost date answer different questions.