Springdale, WA 99137 Frost Dates
Frost dates for Springdale, WA, ZIP 99137
Around 05/16 is the usual last spring frost, about 261 days away. The first fall frost typically arrives around 09/15, about 120 frost-free days later.
Springdale sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around Springdale has about 3 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 06/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Springdale compares
At roughly 120 frost-free days, Springdale places 39,097 of 40,283 ZIP codes in this dataset. Within WA, it ranks 659 of 700.
Learn more
the frost range explains how to read the range around Springdale's dates instead of trusting one, and local microclimates explains what one yard in Springdale can differ from the 99137 normal.