Long Beach, WA 98640 Frost Dates
Long Beach, WA: when does the frost end?
The last spring frost here typically falls around 04/06, about 221 days from today. Fall's first freeze usually shows up around 10/26, roughly 200 days after the last spring frost.
Zone 9a (20 to 25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Long Beach, not a forecast for this year.
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 17,823 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 323 of 700.
Learn more
Before leaning on 98640's figures: zone vs. frost date explains why Zone 9a and Long Beach's frost date answer different questions, while the frost range explains how to read the range around Long Beach's dates instead of trusting one.