Colfax, WA 99111 Frost Dates
Frost dates for Colfax, WA, ZIP 99111
The last spring frost here typically falls around 04/29, about 244 days from today. The first fall frost typically arrives around 10/02, about 159 frost-free days later.
Colfax sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 7a around Colfax 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 Colfax'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 Colfax compares
About 159 days separate Colfax's last and first frost, putting it 32,658 of 40,283 ZIP codes nationally. Within WA, it ranks 575 of 700.
Learn more
the frost range explains how to read the range around Colfax's dates instead of trusting one, and local microclimates explains what one yard in Colfax can differ from the 99111 normal.