Colton, WA 99113 Frost Dates
Frost dates for Colton, WA, ZIP 99113
Typically, the last spring freeze lands around 04/29, roughly 244 days out. The first fall frost typically arrives around 10/02, about 159 frost-free days later.
The USDA Plant Hardiness Zone Map puts Colton in Zone 7a (0 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 7a around Colton has about 5 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 Colton's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Colton compares
About 159 days separate Colton's last and first frost, putting it 32,748 of 40,283 ZIP codes nationally. Within WA, it ranks 578 of 700.
Learn more
local microclimates explains what one yard in Colton can differ from the 99113 normal, and zone vs. frost date explains why Zone 7a and Colton's frost date answer different questions.