Manzanita, OR 97130 Frost Dates
Frost dates for Manzanita, OR, ZIP 97130
The last spring frost here typically falls around 04/02, about 217 days from today. The first fall frost typically arrives around 11/12, about 223 frost-free days later.
The USDA Plant Hardiness Zone Map puts Manzanita in Zone 9a (20 to 25°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 9a around Manzanita has about 11 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.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/04 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Manzanita compares
Manzanita's growing season runs about 223 days, ranking 12,111 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 167 of 463.
Learn more
local microclimates explains what one yard in Manzanita can differ from the 97130 normal, and zone vs. frost date explains why Zone 9a and Manzanita's frost date answer different questions.