Milton, IN 47357 Frost Dates
Frost dates for Milton, IN, ZIP 47357
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/09, about 164 frost-free days later.
Milton 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
Zone 6a around Milton has about 6 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.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milton compares
At roughly 164 frost-free days, Milton places 31,138 of 40,283 ZIP codes in this dataset. Within IN, it ranks 887 of 927.
Learn more
local microclimates explains what one yard in Milton can differ from the 47357 normal, and zone vs. frost date explains why Zone 6a and Milton's frost date answer different questions.