Arlington, WA 98223 Frost Dates
When can you plant in Arlington, WA?
The last spring frost here typically falls around 04/22, about 237 days from today. The first fall frost typically arrives around 10/19, about 181 frost-free days later.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Arlington, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Arlington before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Arlington's last frost
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Arlington compares
About 181 days separate Arlington's last and first frost, putting it 24,464 of 40,283 ZIP codes nationally. Within WA, it ranks 431 of 700.
Learn more
the frost range covers how to read the range around Arlington's dates instead of trusting one. local microclimates covers what one yard in Arlington can differ from the 98223 normal.