Westport, WA 98595 Frost Dates
When can you plant in Westport, WA?
Around 03/29 is the usual last spring frost, about 213 days away. The first fall frost typically arrives around 11/07, about 224 frost-free days later.
The USDA Plant Hardiness Zone Map puts Westport in Zone 9a (20 to 25°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 10 weeks of growing season left in Westport 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
03/29 is the middle of 30 years of NOAA records, not a promise. Plant by 02/28 and you're betting against frost in roughly 9 years out of 10. 04/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Westport compares
About 224 days separate Westport's last and first frost, putting it 11,897 of 40,283 ZIP codes nationally. Within WA, it ranks 218 of 700.
Learn more
zone vs. frost date covers why Zone 9a and Westport's frost date answer different questions. the frost range covers how to read the range around Westport's dates instead of trusting one.