Caledonia, MO 63623 Frost Dates
When can you plant in Caledonia, MO?
Around 04/11 is the usual last spring frost, about 226 days away. The first fall frost typically arrives around 10/28, about 198 frost-free days later.
The USDA Plant Hardiness Zone Map puts Caledonia 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
About 9 weeks of growing season left in Caledonia before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/26 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 Caledonia compares
About 198 days separate Caledonia's last and first frost, putting it 18,557 of 40,283 ZIP codes nationally. Within MO, it ranks 526 of 1,129.
Learn more
the frost range covers how to read the range around Caledonia's dates instead of trusting one. local microclimates covers what one yard in Caledonia can differ from the 63623 normal.