Marion, KS 66861 Frost Dates
Marion, KS: when does the frost end?
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.
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 Marion, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Marion's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Marion's last frost
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.
Marion against the rest of the dataset
Marion's growing season runs about 202 days, ranking 17,270 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 96 of 745.
Learn more
Before leaning on 66861's figures: the frost range explains how to read the range around Marion's dates instead of trusting one, while local microclimates explains what one yard in Marion can differ from the 66861 normal.