Chapman, KS 67431 Frost Dates
67431, near Chapman, KS: the frost window
The last spring frost here typically falls around 04/17, about 232 days from today. Fall's first freeze usually shows up around 10/20, roughly 184 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Chapman 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
Chapman'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.
The actual range around Chapman's last frost
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 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.
Chapman against the rest of the dataset
Chapman's growing season runs about 184 days, ranking 23,582 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 425 of 745.
Learn more
Two guides worth reading on 67431: local microclimates, on what one yard in Chapman can differ from the 67431 normal, and zone vs. frost date, on why Zone 6b and Chapman's frost date answer different questions.