Grandview, WA 98930 Frost Dates
Frost dates for Grandview, WA, ZIP 98930
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/06, about 157 frost-free days later.
Grandview sits in USDA Zone 7b (5 to 10°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 7b around Grandview 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
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Grandview compares
At roughly 157 frost-free days, Grandview places 33,278 of 40,283 ZIP codes in this dataset. Within WA, it ranks 580 of 700.
Learn more
zone vs. frost date explains why Zone 7b and Grandview's frost date answer different questions, and the frost range explains how to read the range around Grandview's dates instead of trusting one.