Corydon, KY 42457 Frost Dates
When can you plant in Corydon, KY?
Around 04/04 is the usual last spring frost, about 219 days away. The first fall frost typically arrives around 10/29, about 207 frost-free days later.
The USDA Plant Hardiness Zone Map puts Corydon 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
About 9 weeks of growing season left in Corydon before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Corydon's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Corydon compares
About 207 days separate Corydon's last and first frost, putting it 15,861 of 40,283 ZIP codes nationally. Within KY, it ranks 177 of 909.
Learn more
zone vs. frost date covers why Zone 7a and Corydon's frost date answer different questions. the frost range covers how to read the range around Corydon's dates instead of trusting one.