Sandy, OR 97055 Frost Dates
Frost dates for Sandy, OR, ZIP 97055
Typically, the last spring freeze lands around 03/27, roughly 211 days out. The first fall frost typically arrives around 11/14, about 230 frost-free days later.
Sandy 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
Zone 8b around Sandy has about 11 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 03/27 isn't a guarantee
03/27 is the middle of 30 years of NOAA records, not a promise. Plant by 03/02 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sandy compares
At roughly 230 frost-free days, Sandy places 10,344 of 40,283 ZIP codes in this dataset. Within OR, it ranks 140 of 463.
Learn more
local microclimates explains what one yard in Sandy can differ from the 97055 normal, and zone vs. frost date explains why Zone 8b and Sandy's frost date answer different questions.