Cynthiana, IN 47612 Frost Dates
When can you plant in Cynthiana, IN?
Typically, the last spring freeze lands around 04/13, roughly 228 days out. The first fall frost typically arrives around 10/25, about 194 frost-free days later.
Cynthiana sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 8 weeks of growing season left in Cynthiana before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Cynthiana's last frost
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/29 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cynthiana compares
Cynthiana's growing season runs about 194 days, ranking 19,574 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 195 of 927.
Learn more
zone vs. frost date covers why Zone 7a and Cynthiana's frost date answer different questions. the frost range covers how to read the range around Cynthiana's dates instead of trusting one.