Mission, KS 66106 Frost Dates
66106, near Mission, KS: the frost window
Typically, the last spring freeze lands around 04/04, roughly 219 days out. Fall's first freeze usually shows up around 11/02, roughly 211 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mission 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
Mission'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 03/17 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.
Mission against the rest of the dataset
At roughly 211 frost-free days, Mission places 14,742 of 40,283 ZIP codes in this dataset. Within KS, it ranks 6 of 745.
Learn more
Two guides worth reading on 66106: local microclimates, on what one yard in Mission can differ from the 66106 normal, and zone vs. frost date, on why Zone 6b and Mission's frost date answer different questions.