Arma, KS 66735 Frost Dates
Frost dates for Arma, KS, ZIP 66735
Around 04/04 is the usual last spring frost, about 219 days away. The first fall frost typically arrives around 11/01, about 209 frost-free days later.
Zone 7a (0 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 Arma, not a forecast for this year.
What to do before the first frost
Zone 7a around Arma has about 9 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 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/19 and you're betting against frost in roughly 9 years out of 10. 04/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Arma compares
At roughly 209 frost-free days, Arma places 15,303 of 40,283 ZIP codes in this dataset. Within KS, it ranks 21 of 745.
Learn more
local microclimates explains what one yard in Arma can differ from the 66735 normal, and zone vs. frost date explains why Zone 7a and Arma's frost date answer different questions.