Port Orford, OR 97491 Frost Dates
Port Orford, OR: when does the frost end?
The last spring frost here typically falls around 02/16, about 172 days from today. Fall's first freeze usually shows up around 12/16, roughly 314 days after the last spring frost.
Zone 9b (25 to 30°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 Orford, not a forecast for this year.
Stretching the season past the first frost
With roughly 16 weeks until Port Orford's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 02/16 isn't a guarantee
02/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/16 and only about 1 year in 10 sees frost after that.
Port Orford against the rest of the dataset
At roughly 314 frost-free days, Port Orford places 3,434 of 40,283 ZIP codes in this dataset. Within OR, it ranks 5 of 463.
Learn more
Before leaning on 97491's figures: zone vs. frost date explains why Zone 9b and Port Orford's frost date answer different questions, while the frost range explains how to read the range around Port Orford's dates instead of trusting one.