Topeka, KS 66601 Frost Dates
Topeka, KS: when does the frost end?
The last spring frost here typically falls around 04/15, about 230 days from today. Fall's first freeze usually shows up around 10/21, roughly 185 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 Topeka, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Topeka's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Topeka's last frost
04/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Topeka against the rest of the dataset
At roughly 185 frost-free days, Topeka places 23,010 of 40,283 ZIP codes in this dataset. Within KS, it ranks 404 of 745.
Learn more
Before leaning on 66601's figures: the frost range explains how to read the range around Topeka's dates instead of trusting one, while local microclimates explains what one yard in Topeka can differ from the 66601 normal.