Woodinville, WA 98072 Frost Dates
Frost dates for Woodinville, WA, ZIP 98072
Around 04/17 is the usual last spring frost, about 232 days away. The first fall frost typically arrives around 10/23, about 188 frost-free days later.
The USDA Plant Hardiness Zone Map puts Woodinville in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 8b around Woodinville has about 8 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
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 03/29 and you're betting against frost in roughly 9 years out of 10. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Woodinville compares
Woodinville's growing season runs about 188 days, ranking 21,892 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 409 of 700.
Learn more
the frost range explains how to read the range around Woodinville's dates instead of trusting one, and local microclimates explains what one yard in Woodinville can differ from the 98072 normal.