Scappoose, OR 97231 Frost Dates
When can you plant in Scappoose, OR?
The last spring frost here typically falls around 03/29, about 213 days from today. The first fall frost typically arrives around 11/09, about 223 frost-free days later.
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 Scappoose, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in Scappoose before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/29 isn't a guarantee
03/29 is the middle of 30 years of NOAA records, not a promise. Plant by 03/06 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Scappoose compares
About 223 days separate Scappoose's last and first frost, putting it 12,054 of 40,283 ZIP codes nationally. Within OR, it ranks 161 of 463.
Learn more
zone vs. frost date covers why Zone 8b and Scappoose's frost date answer different questions. the frost range covers how to read the range around Scappoose's dates instead of trusting one.