Gig Harbor, WA 98395 Frost Dates
When can you plant in Gig Harbor, WA?
Around 03/11 is the usual last spring frost, about 195 days away. The first fall frost typically arrives around 11/21, about 254 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 12 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 03/11 isn't a guarantee
03/11 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. 04/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gig Harbor compares
Gig Harbor's growing season runs about 254 days, ranking 7,014 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 63 of 700.
Learn more
local microclimates covers what one yard in Gig Harbor can differ from the 98395 normal. zone vs. frost date covers why Zone 8b and Gig Harbor's frost date answer different questions.