FrostDateCheck

Lowell, OR 97488 Frost Dates

When can you plant in Lowell, OR?

Zone 8b

The last spring frost here typically falls around 03/02, about 186 days from today. The first fall frost typically arrives around 11/30, about 274 frost-free days later.

Lowell 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 13 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.

Why 03/02 isn't a guarantee

03/02 is the middle of 30 years of NOAA records, not a promise. Plant by 01/24 and you're betting against frost in roughly 9 years out of 10. 03/27 is the safer bet, historically only a 1-in-10 chance of frost that late.

How Lowell compares

Lowell's growing season runs about 274 days, ranking 5,166 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 33 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 97488 normal.