Port Orchard, WA 98384 Frost Dates
Port Orchard, WA: when does the frost end?
Typically, the last spring freeze lands around 03/29, roughly 213 days out. Fall's first freeze usually shows up around 11/14, roughly 227 days after the last spring frost.
Port Orchard sits in USDA Zone 9a (20 to 25°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.
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.
The actual range around Port Orchard's last frost
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 10,972 of 40,283 ZIP codes in this dataset. Within WA, it ranks 195 of 700.
Learn more
Before leaning on 98384's figures: local microclimates explains what one yard in Port Orchard can differ from the 98384 normal, while zone vs. frost date explains why Zone 9a and Port Orchard's frost date answer different questions.