Aumsville, OR 97317 Frost Dates
Frost dates for Aumsville, OR, ZIP 97317
Around 04/03 is the usual last spring frost, about 218 days away. The first fall frost typically arrives around 11/01, about 212 frost-free days later.
Aumsville 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 Aumsville 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.
How much risk comes with planting early here
04/03 is the middle of 30 years of NOAA records, not a promise. Plant by 03/10 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Aumsville compares
Aumsville's growing season runs about 212 days, ranking 14,603 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 204 of 463.
Learn more
zone vs. frost date explains why Zone 8b and Aumsville's frost date answer different questions, and the frost range explains how to read the range around Aumsville's dates instead of trusting one.