Newberg, OR 97132 Frost Dates
97132, near Newberg, OR: the frost window
The last spring frost here typically falls around 03/21, about 205 days from today. Fall's first freeze usually shows up around 11/22, roughly 241 days after the last spring frost.
Zone 8b (15 to 20°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 Newberg, not a forecast for this year.
Stretching the season past the first frost
Newberg'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 03/21 isn't a guarantee
03/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/19 and only about 1 year in 10 sees frost after that.
Newberg against the rest of the dataset
At roughly 241 frost-free days, Newberg places 8,521 of 40,283 ZIP codes in this dataset. Within OR, it ranks 120 of 463.
Learn more
Two guides worth reading on 97132: local microclimates, on what one yard in Newberg can differ from the 97132 normal, and zone vs. frost date, on why Zone 8b and Newberg's frost date answer different questions.