Courtland, KS 66939 Frost Dates
Courtland, KS: when does the frost end?
The last spring frost here typically falls around 04/20, about 235 days from today. Fall's first freeze usually shows up around 10/19, roughly 181 days after the last spring frost.
Zone 6a (-10 to -5°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 Courtland, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Courtland's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Courtland's last frost
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.
Courtland against the rest of the dataset
Courtland's growing season runs about 181 days, ranking 24,714 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 493 of 745.
Learn more
Before leaning on 66939's figures: the frost range explains how to read the range around Courtland's dates instead of trusting one, while local microclimates explains what one yard in Courtland can differ from the 66939 normal.