Conception Junction, MO 64434 Frost Dates
Frost dates for Conception Junction, MO, ZIP 64434
Typically, the last spring freeze lands around 04/17, roughly 232 days out. The first fall frost typically arrives around 10/20, about 184 frost-free days later.
Conception Junction 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 Conception Junction 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
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Conception Junction compares
At roughly 184 frost-free days, Conception Junction places 23,673 of 40,283 ZIP codes in this dataset. Within MO, it ranks 934 of 1,129.
Learn more
local microclimates explains what one yard in Conception Junction can differ from the 64434 normal, and zone vs. frost date explains why Zone 6a and Conception Junction's frost date answer different questions.