Hanover, KS 66412 Frost Dates
Frost dates for Hanover, KS, ZIP 66412
Typically, the last spring freeze lands around 04/25, roughly 240 days out. The first fall frost typically arrives around 10/13, about 171 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hanover 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 Hanover 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.
Why 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hanover compares
About 171 days separate Hanover's last and first frost, putting it 28,760 of 40,283 ZIP codes nationally. Within KS, it ranks 654 of 745.
Learn more
local microclimates explains what one yard in Hanover can differ from the 66412 normal, and zone vs. frost date explains why Zone 6a and Hanover's frost date answer different questions.