Hollenberg, KS 66946 Frost Dates
66946, near Hollenberg, KS: the frost window
Typically, the last spring freeze lands around 04/24, roughly 239 days out. Fall's first freeze usually shows up around 10/14, roughly 171 days after the last spring frost.
Hollenberg sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Hollenberg'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
04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Hollenberg against the rest of the dataset
Hollenberg's growing season runs about 171 days, ranking 28,861 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 667 of 745.
Learn more
Two guides worth reading on 66946: local microclimates, on what one yard in Hollenberg can differ from the 66946 normal, and zone vs. frost date, on why Zone 6a and Hollenberg's frost date answer different questions.