Lafayette, IN 47902 Frost Dates
Frost dates for Lafayette, IN, ZIP 47902
The last spring frost here typically falls around 04/26, about 241 days from today. The first fall frost typically arrives around 10/18, about 173 frost-free days later.
Zone 6a (-10 to -5°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 Lafayette, not a forecast for this year.
What to do before the first frost
Zone 6a around Lafayette has about 7 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
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lafayette compares
Lafayette's growing season runs about 173 days, ranking 27,740 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 695 of 927.
Learn more
zone vs. frost date explains why Zone 6a and Lafayette's frost date answer different questions, and the frost range explains how to read the range around Lafayette's dates instead of trusting one.