Maywood Park, OR 97220 Frost Dates
Frost dates for Maywood Park, OR, ZIP 97220
The last spring frost here typically falls around 03/13, about 197 days from today. The first fall frost typically arrives around 11/19, about 247 frost-free days later.
Zone 9a (20 to 25°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 Maywood Park, not a forecast for this year.
What to do before the first frost
Zone 9a around Maywood Park has about 12 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 03/13 isn't a guarantee
03/13 is the middle of 30 years of NOAA records, not a promise. Plant by 02/22 and you're betting against frost in roughly 9 years out of 10. 04/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Maywood Park compares
At roughly 247 frost-free days, Maywood Park places 7,862 of 40,283 ZIP codes in this dataset. Within OR, it ranks 105 of 463.
Learn more
local microclimates explains what one yard in Maywood Park can differ from the 97220 normal, and zone vs. frost date explains why Zone 9a and Maywood Park's frost date answer different questions.