Newtown, MO 64667 Frost Dates
64667, near Newtown, MO: the frost window
Around 04/25 is the usual last spring frost, about 240 days away. Fall's first freeze usually shows up around 10/15, roughly 174 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Newtown in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Newtown's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Newtown against the rest of the dataset
About 174 days separate Newtown's last and first frost, putting it 27,653 of 40,283 ZIP codes nationally. Within MO, it ranks 1,091 of 1,129.
Learn more
Two guides worth reading on 64667: local microclimates, on what one yard in Newtown can differ from the 64667 normal, and zone vs. frost date, on why Zone 5b and Newtown's frost date answer different questions.