Gig Harbor, WA 98359 Frost Dates
When can you plant in Gig Harbor, WA?
Typically, the last spring freeze lands around 03/29, roughly 213 days out. The first fall frost typically arrives around 11/14, about 227 frost-free days later.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Gig Harbor, not a forecast for this year.
What to do before the first frost
About 11 weeks of growing season left in Gig Harbor before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/29 isn't a guarantee
03/29 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 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 Gig Harbor compares
At roughly 227 frost-free days, Gig Harbor places 10,977 of 40,283 ZIP codes in this dataset. Within WA, it ranks 197 of 700.
Learn more
the frost range covers how to read the range around Gig Harbor's dates instead of trusting one. local microclimates covers what one yard in Gig Harbor can differ from the 98359 normal.