Washougal, WA 97256 Frost Dates
Frost dates for Washougal, WA, ZIP 97256
Typically, the last spring freeze lands around 03/16, roughly 200 days out. The first fall frost typically arrives around 11/20, about 250 frost-free days later.
Washougal sits in USDA Zone 9a (20 to 25°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 9a around Washougal has about 12 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
03/16 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 and you're betting against frost in roughly 9 years out of 10. 04/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Washougal compares
Washougal's growing season runs about 250 days, ranking 7,488 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 108 of 700.
Learn more
the frost range explains how to read the range around Washougal's dates instead of trusting one, and local microclimates explains what one yard in Washougal can differ from the 97256 normal.