Port Orford, OR 97476 Frost Dates
Frost dates for Port Orford, OR, ZIP 97476
Around 03/16 is the usual last spring frost, about 200 days away. 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.
The actual range around Port Orford's last frost
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
At roughly 258 frost-free days, Port Orford places 6,656 of 40,283 ZIP codes in this dataset. Within OR, it ranks 45 of 463.
Learn more
the frost range explains how to read the range around Port Orford's dates instead of trusting one, and local microclimates explains what one yard in Port Orford can differ from the 97476 normal.