Stanberry, MO 64489 Frost Dates
64489, near Stanberry, MO: the frost window
Typically, the last spring freeze lands around 04/17, roughly 232 days out. Fall's first freeze usually shows up around 10/20, roughly 184 days after the last spring frost.
Zone 6a (-10 to -5°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 Stanberry, not a forecast for this year.
Stretching the season past the first frost
Stanberry'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 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Stanberry against the rest of the dataset
Stanberry's growing season runs about 184 days, ranking 23,588 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 907 of 1,129.
Learn more
Two guides worth reading on 64489: the frost range, on how to read the range around Stanberry's dates instead of trusting one, and local microclimates, on what one yard in Stanberry can differ from the 64489 normal.