Republic, KS 66964 Frost Dates
66964, near Republic, KS: the frost window
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/19, roughly 181 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Republic in Zone 6a (-10 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
Republic's growing season runs out in roughly 7 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
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Republic against the rest of the dataset
Republic's growing season runs about 181 days, ranking 24,745 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 500 of 745.
Learn more
Two guides worth reading on 66964: local microclimates, on what one yard in Republic can differ from the 66964 normal, and zone vs. frost date, on why Zone 6a and Republic's frost date answer different questions.