Lowell, OR 97431 Frost Dates
When can you plant in Lowell, OR?
Around 04/24 is the usual last spring frost, about 239 days away. The first fall frost typically arrives around 10/25, about 183 frost-free days later.
The USDA Plant Hardiness Zone Map puts Lowell in Zone 9a (20 to 25°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 8 weeks of growing season left in Lowell before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Lowell's last frost
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lowell compares
Lowell's growing season runs about 183 days, ranking 23,904 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 298 of 463.
Learn more
the frost range covers how to read the range around Lowell's dates instead of trusting one. local microclimates covers what one yard in Lowell can differ from the 97431 normal.