Odessa, WA 99159 Frost Dates
When can you plant in Odessa, WA?
Typically, the last spring freeze lands around 05/31, roughly 276 days out. The first fall frost typically arrives around 09/12, about 101 frost-free days later.
Odessa 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.
What to do before the first frost
About 2 weeks of growing season left in Odessa before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Odessa's last frost
05/31 is the middle of 30 years of NOAA records, not a promise. Plant by 05/10 and you're betting against frost in roughly 9 years out of 10. 06/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Odessa compares
About 101 days separate Odessa's last and first frost, putting it 39,681 of 40,283 ZIP codes nationally. Within WA, it ranks 678 of 700.
Learn more
local microclimates covers what one yard in Odessa can differ from the 99159 normal. zone vs. frost date covers why Zone 6b and Odessa's frost date answer different questions.