Ilwaco, WA 98614 Frost Dates
Ilwaco, WA: when does the frost end?
Typically, the last spring freeze lands around 04/06, roughly 221 days out. Fall's first freeze usually shows up around 10/26, roughly 200 days after the last spring frost.
Ilwaco 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.
Stretching the season past the first frost
With roughly 8 weeks until Ilwaco'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
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
Ilwaco against the rest of the dataset
Ilwaco's growing season runs about 200 days, ranking 17,851 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 329 of 700.
Learn more
Before leaning on 98614's figures: the frost range explains how to read the range around Ilwaco's dates instead of trusting one, while local microclimates explains what one yard in Ilwaco can differ from the 98614 normal.