Independence, OR 97351 Frost Dates
Frost dates for Independence, OR, ZIP 97351
Around 04/16 is the usual last spring frost, about 231 days away. The first fall frost typically arrives around 11/01, about 199 frost-free days later.
The USDA Plant Hardiness Zone Map puts Independence 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 Independence has about 9 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.
The actual range around Independence's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 03/21 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Independence compares
At roughly 199 frost-free days, Independence places 18,069 of 40,283 ZIP codes in this dataset. Within OR, it ranks 235 of 463.
Learn more
local microclimates explains what one yard in Independence can differ from the 97351 normal, and zone vs. frost date explains why Zone 8b and Independence's frost date answer different questions.