Port Orchard, WA 98353 Frost Dates
Port Orchard, WA: when does the frost end?
The last spring frost here typically falls around 03/29, about 213 days from today. Fall's first freeze usually shows up around 11/14, roughly 227 days after the last spring frost.
Zone 9a (20 to 25°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 Port Orchard, not a forecast for this year.
Stretching the season past the first frost
With roughly 11 weeks until Port Orchard's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
03/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/24 and only about 1 year in 10 sees frost after that.
Port Orchard against the rest of the dataset
At roughly 227 frost-free days, Port Orchard places 10,969 of 40,283 ZIP codes in this dataset. Within WA, it ranks 192 of 700.
Learn more
Before leaning on 98353's figures: the frost range explains how to read the range around Port Orchard's dates instead of trusting one, while local microclimates explains what one yard in Port Orchard can differ from the 98353 normal.