Topeka, KS 66612 Frost Dates
Topeka, KS: when does the frost end?
Around 04/16 is the usual last spring frost, about 231 days away. Fall's first freeze usually shows up around 10/22, roughly 189 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
04/16 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 04/27 and only about 1 year in 10 sees frost after that.
Topeka against the rest of the dataset
Topeka's growing season runs about 189 days, ranking 21,369 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 310 of 745.
Learn more
Before leaning on 66612's figures: zone vs. frost date explains why Zone 6b and Topeka's frost date answer different questions, while the frost range explains how to read the range around Topeka's dates instead of trusting one.