Horton, KS 66439 Frost Dates
Frost dates for Horton, KS, ZIP 66439
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 10/17, about 180 frost-free days later.
The USDA Plant Hardiness Zone Map puts Horton in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6a around Horton has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Horton's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Horton compares
Horton's growing season runs about 180 days, ranking 24,915 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 510 of 745.
Learn more
zone vs. frost date explains why Zone 6a and Horton's frost date answer different questions, and the frost range explains how to read the range around Horton's dates instead of trusting one.