Maywood Park, OR 97218 Frost Dates
97218, near Maywood Park, OR: the frost window
Around 03/13 is the usual last spring frost, about 197 days away. Fall's first freeze usually shows up around 11/19, roughly 247 days after the last spring frost.
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.
Stretching the season past the first frost
Maywood Park's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/13 isn't a guarantee
03/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/01 and only about 1 year in 10 sees frost after that.
Maywood Park against the rest of the dataset
About 247 days separate Maywood Park's last and first frost, putting it 7,861 of 40,283 ZIP codes nationally. Within OR, it ranks 104 of 463.
Learn more
Two guides worth reading on 97218: local microclimates, on what one yard in Maywood Park can differ from the 97218 normal, and zone vs. frost date, on why Zone 9a and Maywood Park's frost date answer different questions.