Omak, WA 98841 Frost Dates
Frost dates for Omak, WA, ZIP 98841
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/07, about 160 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 Omak, not a forecast for this year.
What to do before the first frost
Zone 6b around Omak has about 6 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.
How much risk comes with planting early here
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Omak compares
About 160 days separate Omak's last and first frost, putting it 32,298 of 40,283 ZIP codes nationally. Within WA, it ranks 567 of 700.
Learn more
the frost range explains how to read the range around Omak's dates instead of trusting one, and local microclimates explains what one yard in Omak can differ from the 98841 normal.