Greenfield, MO 65661 Frost Dates
65661, near Greenfield, MO: the frost window
Around 04/11 is the usual last spring frost, about 226 days away. Fall's first freeze usually shows up around 10/25, roughly 198 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Greenfield in Zone 7a (0 to 5°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
Greenfield'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.
How much risk comes with planting early here
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/27 and only about 1 year in 10 sees frost after that.
Greenfield against the rest of the dataset
About 198 days separate Greenfield's last and first frost, putting it 18,458 of 40,283 ZIP codes nationally. Within MO, it ranks 489 of 1,129.
Learn more
Two guides worth reading on 65661: local microclimates, on what one yard in Greenfield can differ from the 65661 normal, and zone vs. frost date, on why Zone 7a and Greenfield's frost date answer different questions.