Zionsville, IN 46077 Frost Dates
When can you plant in Zionsville, IN?
The last spring frost here typically falls around 04/12, about 227 days from today. The first fall frost typically arrives around 10/29, about 198 frost-free days later.
Zionsville sits in USDA Zone 6a (-10 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 9 weeks of growing season left in Zionsville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Zionsville's last frost
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 03/30 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Zionsville compares
About 198 days separate Zionsville's last and first frost, putting it 18,285 of 40,283 ZIP codes nationally. Within IN, it ranks 116 of 927.
Learn more
local microclimates covers what one yard in Zionsville can differ from the 46077 normal. zone vs. frost date covers why Zone 6a and Zionsville's frost date answer different questions.