Oak Harbor, WA 98277 Frost Dates
Oak Harbor, WA: when does the frost end?
The last spring frost here typically falls around 03/13, about 197 days from today. Fall's first freeze usually shows up around 11/14, roughly 244 days after the last spring frost.
Oak Harbor sits in USDA Zone 8b (15 to 20°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 Oak Harbor's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Oak Harbor's last frost
03/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/01 and only about 1 year in 10 sees frost after that.
Oak Harbor against the rest of the dataset
About 244 days separate Oak Harbor's last and first frost, putting it 8,206 of 40,283 ZIP codes nationally. Within WA, it ranks 157 of 700.
Learn more
Before leaning on 98277's figures: the frost range explains how to read the range around Oak Harbor's dates instead of trusting one, while local microclimates explains what one yard in Oak Harbor can differ from the 98277 normal.