Eugene, OR 97402 Frost Dates
When can you plant in Eugene, OR?
Typically, the last spring freeze lands around 04/11, roughly 226 days out. The first fall frost typically arrives around 10/23, about 196 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 Eugene, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Eugene before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/15 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Eugene compares
About 196 days separate Eugene's last and first frost, putting it 18,897 of 40,283 ZIP codes nationally. Within OR, it ranks 242 of 463.
Learn more
zone vs. frost date covers why Zone 8b and Eugene's frost date answer different questions. the frost range covers how to read the range around Eugene's dates instead of trusting one.