Bremerton, WA 98312 Frost Dates
Bremerton, WA: when does the frost end?
Around 03/29 is the usual last spring frost, about 213 days away. Fall's first freeze usually shows up around 11/14, roughly 227 days after the last spring frost.
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 Bremerton, not a forecast for this year.
Stretching the season past the first frost
With roughly 11 weeks until Bremerton's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Bremerton'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.
Bremerton against the rest of the dataset
Bremerton's growing season runs about 227 days, ranking 10,950 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 184 of 700.
Learn more
Before leaning on 98312's figures: the frost range explains how to read the range around Bremerton's dates instead of trusting one, while local microclimates explains what one yard in Bremerton can differ from the 98312 normal.