Oakville, WA 98579 Frost Dates
Oakville, WA: when does the frost end?
The last spring frost here typically falls around 04/22, about 237 days from today. Fall's first freeze usually shows up around 10/27, roughly 188 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oakville in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 9 weeks until Oakville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Oakville against the rest of the dataset
About 188 days separate Oakville's last and first frost, putting it 22,131 of 40,283 ZIP codes nationally. Within WA, it ranks 415 of 700.
Learn more
Before leaning on 98579's figures: local microclimates explains what one yard in Oakville can differ from the 98579 normal, while zone vs. frost date explains why Zone 8b and Oakville's frost date answer different questions.