Warrensburg, IL 62573 Frost Dates
Frost dates for Warrensburg, IL, ZIP 62573
Typically, the last spring freeze lands around 04/14, roughly 229 days out. The first fall frost typically arrives around 10/24, about 192 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 Warrensburg, not a forecast for this year.
What to do before the first frost
Zone 6a around Warrensburg has about 8 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
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 05/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Warrensburg compares
Warrensburg's growing season runs about 192 days, ranking 20,466 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 430 of 1,548.
Learn more
local microclimates explains what one yard in Warrensburg can differ from the 62573 normal, and zone vs. frost date explains why Zone 6a and Warrensburg's frost date answer different questions.