Mossyrock, WA 98585 Frost Dates
Mossyrock, WA: when does the frost end?
The last spring frost here typically falls around 04/07, about 222 days from today. Fall's first freeze usually shows up around 11/13, roughly 215 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mossyrock in Zone 8b (15 to 20°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 11 weeks until Mossyrock'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
04/07 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 05/08 and only about 1 year in 10 sees frost after that.
Mossyrock against the rest of the dataset
At roughly 215 frost-free days, Mossyrock places 14,152 of 40,283 ZIP codes in this dataset. Within WA, it ranks 260 of 700.
Learn more
Before leaning on 98585's figures: the frost range explains how to read the range around Mossyrock's dates instead of trusting one, while local microclimates explains what one yard in Mossyrock can differ from the 98585 normal.