Seneca, KS 66538 Frost Dates
Seneca, KS: when does the frost end?
The last spring frost here typically falls around 04/22, about 237 days from today. Fall's first freeze usually shows up around 10/13, roughly 173 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 Seneca, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Seneca's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/02 and only about 1 year in 10 sees frost after that.
Seneca against the rest of the dataset
About 173 days separate Seneca's last and first frost, putting it 27,930 of 40,283 ZIP codes nationally. Within KS, it ranks 615 of 745.
Learn more
Before leaning on 66538's figures: local microclimates explains what one yard in Seneca can differ from the 66538 normal, while zone vs. frost date explains why Zone 6a and Seneca's frost date answer different questions.