Lost Springs, KS 66859 Frost Dates
66859, near Lost Springs, KS: the frost window
The last spring frost here typically falls around 04/08, about 223 days from today. Fall's first freeze usually shows up around 10/30, roughly 202 days after the last spring frost.
Lost Springs 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
Lost Springs'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 04/08 isn't a guarantee
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/25 and only about 1 year in 10 sees frost after that.
Lost Springs against the rest of the dataset
At roughly 202 frost-free days, Lost Springs places 17,400 of 40,283 ZIP codes in this dataset. Within KS, it ranks 105 of 745.
Learn more
Two guides worth reading on 66859: the frost range, on how to read the range around Lost Springs's dates instead of trusting one, and local microclimates, on what one yard in Lost Springs can differ from the 66859 normal.