Tacoma, WA 98402 Frost Dates
Frost dates for Tacoma, WA, ZIP 98402
Around 03/08 is the usual last spring frost, about 192 days away. The first fall frost typically arrives around 11/14, about 250 frost-free days later.
Tacoma 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 Tacoma 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 Tacoma'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 Tacoma compares
At roughly 250 frost-free days, Tacoma places 7,412 of 40,283 ZIP codes in this dataset. Within WA, it ranks 79 of 700.
Learn more
the frost range explains how to read the range around Tacoma's dates instead of trusting one, and local microclimates explains what one yard in Tacoma can differ from the 98402 normal.