Covington, WA 98093 Frost Dates
When can you plant in Covington, WA?
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/25, about 187 frost-free days later.
The USDA Plant Hardiness Zone Map puts Covington in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Covington before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Covington compares
About 187 days separate Covington's last and first frost, putting it 22,298 of 40,283 ZIP codes nationally. Within WA, it ranks 419 of 700.
Learn more
local microclimates covers what one yard in Covington can differ from the 98093 normal. zone vs. frost date covers why Zone 8b and Covington's frost date answer different questions.