Naches, WA 98942 Frost Dates
Frost dates for Naches, WA, ZIP 98942
Around 05/05 is the usual last spring frost, about 250 days away. The first fall frost typically arrives around 10/04, about 149 frost-free days later.
Naches 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 Naches 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.
How much risk comes with planting early here
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Naches compares
Naches's growing season runs about 149 days, ranking 35,536 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 605 of 700.
Learn more
zone vs. frost date explains why Zone 7a and Naches's frost date answer different questions, and the frost range explains how to read the range around Naches's dates instead of trusting one.