Cusick, WA 99119 Frost Dates
Cusick, WA: when does the frost end?
Typically, the last spring freeze lands around 05/20, roughly 265 days out. Fall's first freeze usually shows up around 09/13, roughly 114 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Cusick in Zone 6a (-10 to -5°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 2 weeks until Cusick's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Cusick's last frost
05/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/04 and only about 1 year in 10 sees frost after that.
Cusick against the rest of the dataset
Cusick's growing season runs about 114 days, ranking 39,375 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 664 of 700.
Learn more
Before leaning on 99119's figures: local microclimates explains what one yard in Cusick can differ from the 99119 normal, while zone vs. frost date explains why Zone 6a and Cusick's frost date answer different questions.