Long Beach, WA 98631 Frost Dates
Long Beach, 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.
The USDA Plant Hardiness Zone Map puts Long Beach in Zone 9a (20 to 25°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 8 weeks until Long Beach's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/06 isn't a guarantee
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.
Long Beach against the rest of the dataset
Long Beach's growing season runs about 200 days, ranking 17,822 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 322 of 700.
Learn more
Before leaning on 98631's figures: the frost range explains how to read the range around Long Beach's dates instead of trusting one, while local microclimates explains what one yard in Long Beach can differ from the 98631 normal.