Eugene, OR 97404 Frost Dates
Frost dates for Eugene, OR, ZIP 97404
Around 04/11 is the usual last spring frost, about 226 days away. The first fall frost typically arrives around 10/23, about 196 frost-free days later.
The USDA Plant Hardiness Zone Map puts Eugene in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 8b around Eugene has about 8 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.
The actual range around Eugene's last frost
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
Eugene's growing season runs about 196 days, ranking 18,899 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 244 of 463.
Learn more
zone vs. frost date explains why Zone 8b and Eugene's frost date answer different questions, and the frost range explains how to read the range around Eugene's dates instead of trusting one.