Fircrest, WA 98409 Frost Dates
Frost dates for Fircrest, WA, ZIP 98409
Typically, the last spring freeze lands around 03/08, roughly 192 days out. The first fall frost typically arrives around 11/14, about 250 frost-free days later.
Fircrest sits in USDA Zone 8b (15 to 20°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
Zone 8b around Fircrest has about 11 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Fircrest's last frost
03/08 is the middle of 30 years of NOAA records, not a promise. Plant by 02/15 and you're betting against frost in roughly 9 years out of 10. 03/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fircrest compares
About 250 days separate Fircrest's last and first frost, putting it 7,522 of 40,283 ZIP codes nationally. Within WA, it ranks 124 of 700.
Learn more
the frost range explains how to read the range around Fircrest's dates instead of trusting one, and local microclimates explains what one yard in Fircrest can differ from the 98409 normal.