Princeton, KS 66078 Frost Dates
Princeton, KS: when does the frost end?
Around 04/18 is the usual last spring frost, about 233 days away. Fall's first freeze usually shows up around 10/20, roughly 183 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 Princeton, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Princeton's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Princeton's last frost
04/18 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 05/01 and only about 1 year in 10 sees frost after that.
Princeton against the rest of the dataset
At roughly 183 frost-free days, Princeton places 24,020 of 40,283 ZIP codes in this dataset. Within KS, it ranks 459 of 745.
Learn more
Before leaning on 66078's figures: the frost range explains how to read the range around Princeton's dates instead of trusting one, while local microclimates explains what one yard in Princeton can differ from the 66078 normal.