Washougal, WA 98671 Frost Dates
Frost dates for Washougal, WA, ZIP 98671
The last spring frost here typically falls around 04/29, about 244 days from today. The first fall frost typically arrives around 10/22, about 177 frost-free days later.
Washougal sits in USDA Zone 8b (15 to 20°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 8b around Washougal 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.
Why 04/29 isn't a guarantee
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 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 Washougal compares
At roughly 177 frost-free days, Washougal places 26,052 of 40,283 ZIP codes in this dataset. Within WA, it ranks 460 of 700.
Learn more
local microclimates explains what one yard in Washougal can differ from the 98671 normal, and zone vs. frost date explains why Zone 8b and Washougal's frost date answer different questions.