Halltown, MO 65612 Frost Dates
65612, near Halltown, MO: the frost window
Typically, the last spring freeze lands around 04/11, roughly 226 days out. Fall's first freeze usually shows up around 10/24, roughly 196 days after the last spring frost.
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 Halltown, not a forecast for this year.
Stretching the season past the first frost
Halltown's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/11 isn't a guarantee
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Halltown against the rest of the dataset
About 196 days separate Halltown's last and first frost, putting it 19,117 of 40,283 ZIP codes nationally. Within MO, it ranks 593 of 1,129.
Learn more
Two guides worth reading on 65612: local microclimates, on what one yard in Halltown can differ from the 65612 normal, and zone vs. frost date, on why Zone 6b and Halltown's frost date answer different questions.