Springdale, WA 99129 Frost Dates
99129, near Springdale, WA: the frost window
Typically, the last spring freeze lands around 06/06, roughly 282 days out. Fall's first freeze usually shows up around 09/11, roughly 94 days after the last spring frost.
Springdale sits in USDA Zone 7a (0 to 5°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.
Stretching the season past the first frost
Springdale's growing season runs out in roughly 2 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Springdale's last frost
06/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 07/05 and only about 1 year in 10 sees frost after that.
Springdale against the rest of the dataset
Springdale's growing season runs about 94 days, ranking 39,849 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 692 of 700.
Learn more
Two guides worth reading on 99129: zone vs. frost date, on why Zone 7a and Springdale's frost date answer different questions, and the frost range, on how to read the range around Springdale's dates instead of trusting one.