Springfield, MO 65807 Frost Dates
65807, near Springfield, MO: the frost window
Around 04/04 is the usual last spring frost, about 219 days away. Fall's first freeze usually shows up around 10/27, roughly 204 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Springfield in Zone 6b (-5 to 0°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
Springfield'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.
Why 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Springfield against the rest of the dataset
About 204 days separate Springfield's last and first frost, putting it 16,455 of 40,283 ZIP codes nationally. Within MO, it ranks 279 of 1,129.
Learn more
Two guides worth reading on 65807: local microclimates, on what one yard in Springfield can differ from the 65807 normal, and zone vs. frost date, on why Zone 6b and Springfield's frost date answer different questions.