Granger, WA 98932 Frost Dates
98932, near Granger, WA: the frost window
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/08, roughly 160 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Granger in Zone 7a (0 to 5°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
Granger's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Granger against the rest of the dataset
Granger's growing season runs about 160 days, ranking 32,310 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 568 of 700.
Learn more
Two guides worth reading on 98932: zone vs. frost date, on why Zone 7a and Granger's frost date answer different questions, and the frost range, on how to read the range around Granger's dates instead of trusting one.