Rockford, WA 99036 Frost Dates
99036, near Rockford, WA: the frost window
Around 04/26 is the usual last spring frost, about 241 days away. Fall's first freeze usually shows up around 10/15, roughly 170 days after the last spring frost.
Rockford 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.
Stretching the season past the first frost
Rockford's growing season runs out in roughly 7 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
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Rockford against the rest of the dataset
About 170 days separate Rockford's last and first frost, putting it 29,171 of 40,283 ZIP codes nationally. Within WA, it ranks 506 of 700.
Learn more
Two guides worth reading on 99036: zone vs. frost date, on why Zone 6b and Rockford's frost date answer different questions, and the frost range, on how to read the range around Rockford's dates instead of trusting one.