Eureka, KS 66855 Frost Dates
Eureka, KS: when does the frost end?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. Fall's first freeze usually shows up around 10/20, roughly 186 days after the last spring frost.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Eureka, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Eureka's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/01 and only about 1 year in 10 sees frost after that.
Eureka against the rest of the dataset
At roughly 186 frost-free days, Eureka places 22,851 of 40,283 ZIP codes in this dataset. Within KS, it ranks 381 of 745.
Learn more
Before leaning on 66855's figures: the frost range explains how to read the range around Eureka's dates instead of trusting one, while local microclimates explains what one yard in Eureka can differ from the 66855 normal.