La Harpe, KS 66751 Frost Dates
66751, near La Harpe, KS: the frost window
Around 04/08 is the usual last spring frost, about 223 days away. Fall's first freeze usually shows up around 10/26, roughly 200 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts La Harpe 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
La Harpe'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 04/08 isn't a guarantee
04/08 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 04/24 and only about 1 year in 10 sees frost after that.
La Harpe against the rest of the dataset
La Harpe's growing season runs about 200 days, ranking 17,878 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 135 of 745.
Learn more
Two guides worth reading on 66751: local microclimates, on what one yard in La Harpe can differ from the 66751 normal, and zone vs. frost date, on why Zone 6b and La Harpe's frost date answer different questions.