Sutherlin, OR 97494 Frost Dates
Frost dates for Sutherlin, OR, ZIP 97494
Typically, the last spring freeze lands around 03/31, roughly 215 days out. The first fall frost typically arrives around 11/05, about 215 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sutherlin 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
Zone 8b around Sutherlin has about 10 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 03/31 isn't a guarantee
03/31 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. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sutherlin compares
At roughly 215 frost-free days, Sutherlin places 14,062 of 40,283 ZIP codes in this dataset. Within OR, it ranks 189 of 463.
Learn more
local microclimates explains what one yard in Sutherlin can differ from the 97494 normal, and zone vs. frost date explains why Zone 8b and Sutherlin's frost date answer different questions.