Metaline Falls, WA 99153 Frost Dates
Metaline Falls, WA: when does the frost end?
Typically, the last spring freeze lands around 05/04, roughly 249 days out. Fall's first freeze usually shows up around 10/04, roughly 153 days after the last spring frost.
Zone 6a (-10 to -5°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 Metaline Falls, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Metaline Falls's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Metaline Falls against the rest of the dataset
At roughly 153 frost-free days, Metaline Falls places 34,628 of 40,283 ZIP codes in this dataset. Within WA, it ranks 591 of 700.
Learn more
Before leaning on 99153's figures: the frost range explains how to read the range around Metaline Falls's dates instead of trusting one, while local microclimates explains what one yard in Metaline Falls can differ from the 99153 normal.