Wynnedale, IN 46228 Frost Dates
Frost dates for Wynnedale, IN, ZIP 46228
Typically, the last spring freeze lands around 04/12, roughly 227 days out. The first fall frost typically arrives around 10/29, about 198 frost-free days later.
The USDA Plant Hardiness Zone Map puts Wynnedale in Zone 6b (-5 to 0°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
Zone 6b around Wynnedale has about 9 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
04/12 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 Wynnedale compares
At roughly 198 frost-free days, Wynnedale places 18,542 of 40,283 ZIP codes in this dataset. Within IN, it ranks 124 of 927.
Learn more
the frost range explains how to read the range around Wynnedale's dates instead of trusting one, and local microclimates explains what one yard in Wynnedale can differ from the 46228 normal.