Dallas, OR 97338 Frost Dates
When can you plant in Dallas, OR?
The last spring frost here typically falls around 04/16, about 231 days from today. The first fall frost typically arrives around 11/01, about 199 frost-free days later.
The USDA Plant Hardiness Zone Map puts Dallas 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
About 9 weeks of growing season left in Dallas before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Dallas's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 03/21 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dallas compares
Dallas's growing season runs about 199 days, ranking 18,041 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 233 of 463.
Learn more
zone vs. frost date covers why Zone 8b and Dallas's frost date answer different questions. the frost range covers how to read the range around Dallas's dates instead of trusting one.