Port Orford, OR 97465 Frost Dates
Frost dates for Port Orford, OR, ZIP 97465
The last spring frost here typically falls around 03/16, about 200 days from today. The first fall frost typically arrives around 11/29, about 258 frost-free days later.
The USDA Plant Hardiness Zone Map puts Port Orford in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 9b around Port Orford has about 13 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
03/16 is the middle of 30 years of NOAA records, not a promise. Plant by 02/06 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Port Orford compares
Port Orford's growing season runs about 258 days, ranking 6,655 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 44 of 463.
Learn more
local microclimates explains what one yard in Port Orford can differ from the 97465 normal, and zone vs. frost date explains why Zone 9b and Port Orford's frost date answer different questions.