Columbia City, OR 97054 Frost Dates
When can you plant in Columbia City, OR?
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 11/07, about 201 frost-free days later.
The USDA Plant Hardiness Zone Map puts Columbia City 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 10 weeks of growing season left in Columbia City 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
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 05/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Columbia City compares
About 201 days separate Columbia City's last and first frost, putting it 17,538 of 40,283 ZIP codes nationally. Within OR, it ranks 232 of 463.
Learn more
zone vs. frost date covers why Zone 8b and Columbia City's frost date answer different questions. the frost range covers how to read the range around Columbia City's dates instead of trusting one.