Milan, MO 63556 Frost Dates
Frost dates for Milan, MO, ZIP 63556
Typically, the last spring freeze lands around 04/26, roughly 241 days out. The first fall frost typically arrives around 10/14, about 169 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 Milan, not a forecast for this year.
What to do before the first frost
Zone 6a around Milan 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. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milan compares
Milan's growing season runs about 169 days, ranking 29,484 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 1,101 of 1,129.
Learn more
zone vs. frost date explains why Zone 6a and Milan's frost date answer different questions, and the frost range explains how to read the range around Milan's dates instead of trusting one.