Endicott, WA 99174 Frost Dates
Frost dates for Endicott, WA, ZIP 99174
Typically, the last spring freeze lands around 05/13, roughly 258 days out. The first fall frost typically arrives around 09/26, about 133 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 Endicott, not a forecast for this year.
What to do before the first frost
Zone 6b around Endicott has about 4 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 Endicott's last frost
05/13 is the middle of 30 years of NOAA records, not a promise. Plant by 04/28 and you're betting against frost in roughly 9 years out of 10. 06/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Endicott compares
About 133 days separate Endicott's last and first frost, putting it 38,131 of 40,283 ZIP codes nationally. Within WA, it ranks 631 of 700.
Learn more
local microclimates explains what one yard in Endicott can differ from the 99174 normal, and zone vs. frost date explains why Zone 6b and Endicott's frost date answer different questions.