Oakesdale, WA 99158 Frost Dates
99158, near Oakesdale, WA: the frost window
Around 05/15 is the usual last spring frost, about 260 days away. Fall's first freeze usually shows up around 09/21, roughly 126 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oakesdale 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
Oakesdale's growing season runs out in roughly 3 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/02 and only about 1 year in 10 sees frost after that.
Oakesdale against the rest of the dataset
At roughly 126 frost-free days, Oakesdale places 38,716 of 40,283 ZIP codes in this dataset. Within WA, it ranks 648 of 700.
Learn more
Two guides worth reading on 99158: the frost range, on how to read the range around Oakesdale's dates instead of trusting one, and local microclimates, on what one yard in Oakesdale can differ from the 99158 normal.