Creston, WA 99117 Frost Dates
Creston, WA: when does the frost end?
The last spring frost here typically falls around 06/01, about 277 days from today. Fall's first freeze usually shows up around 09/22, roughly 112 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Creston in Zone 6b (-5 to 0°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 4 weeks until Creston'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
06/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/22 and only about 1 year in 10 sees frost after that.
Creston against the rest of the dataset
Creston's growing season runs about 112 days, ranking 39,442 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 672 of 700.
Learn more
Before leaning on 99117's figures: local microclimates explains what one yard in Creston can differ from the 99117 normal, while zone vs. frost date explains why Zone 6b and Creston's frost date answer different questions.