Plato, MO 65660 Frost Dates
65660, near Plato, MO: the frost window
The last spring frost here typically falls around 04/11, about 226 days from today. Fall's first freeze usually shows up around 10/28, 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 Plato, not a forecast for this year.
Stretching the season past the first frost
Plato's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Plato's last frost
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.
Plato against the rest of the dataset
At roughly 196 frost-free days, Plato places 19,122 of 40,283 ZIP codes in this dataset. Within MO, it ranks 595 of 1,129.
Learn more
Two guides worth reading on 65660: local microclimates, on what one yard in Plato can differ from the 65660 normal, and zone vs. frost date, on why Zone 6b and Plato's frost date answer different questions.