Halfway, MO 65663 Frost Dates
When can you plant in Halfway, MO?
Around 04/14 is the usual last spring frost, about 229 days away. The first fall frost typically arrives around 10/23, about 188 frost-free days later.
Zone 6b (-5 to 0°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 Halfway, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Halfway before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 03/29 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Halfway compares
At roughly 188 frost-free days, Halfway places 22,229 of 40,283 ZIP codes in this dataset. Within MO, it ranks 824 of 1,129.
Learn more
local microclimates covers what one yard in Halfway can differ from the 65663 normal. zone vs. frost date covers why Zone 6b and Halfway's frost date answer different questions.