Humboldt, KS 66748 Frost Dates
When can you plant in Humboldt, KS?
Typically, the last spring freeze lands around 04/08, roughly 223 days out. The first fall frost typically arrives around 10/26, about 200 frost-free days later.
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 Humboldt, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Humboldt before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Humboldt's last frost
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 04/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Humboldt compares
Humboldt's growing season runs about 200 days, ranking 17,819 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 130 of 745.
Learn more
local microclimates covers what one yard in Humboldt can differ from the 66748 normal. zone vs. frost date covers why Zone 6b and Humboldt's frost date answer different questions.