Dayton, OR 97114 Frost Dates
When can you plant in Dayton, OR?
The last spring frost here typically falls around 04/05, about 220 days from today. The first fall frost typically arrives around 11/07, about 216 frost-free days later.
Dayton sits in USDA Zone 8b (15 to 20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 10 weeks of growing season left in Dayton 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
04/05 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dayton compares
About 216 days separate Dayton's last and first frost, putting it 13,796 of 40,283 ZIP codes nationally. Within OR, it ranks 184 of 463.
Learn more
zone vs. frost date covers why Zone 8b and Dayton's frost date answer different questions. the frost range covers how to read the range around Dayton's dates instead of trusting one.