Jordan Valley, OR 97902 Frost Dates
Frost dates for Jordan Valley, OR, ZIP 97902
The last spring frost here typically falls around 05/26, about 271 days from today. The first fall frost typically arrives around 09/21, about 117 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Jordan Valley, not a forecast for this year.
What to do before the first frost
Zone 6b around Jordan Valley has about 3 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
05/26 is the middle of 30 years of NOAA records, not a promise. Plant by 05/08 and you're betting against frost in roughly 9 years out of 10. 06/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Jordan Valley compares
About 117 days separate Jordan Valley's last and first frost, putting it 39,265 of 40,283 ZIP codes nationally. Within OR, it ranks 390 of 463.
Learn more
zone vs. frost date explains why Zone 6b and Jordan Valley's frost date answer different questions, and the frost range explains how to read the range around Jordan Valley's dates instead of trusting one.