Nezperce, ID 83543 Frost Dates
Frost dates for Nezperce, ID, ZIP 83543
The last spring frost here typically falls around 05/24, about 269 days from today. The first fall frost typically arrives around 09/20, about 116 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 Nezperce, not a forecast for this year.
What to do before the first frost
Zone 6b around Nezperce 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
05/24 is the middle of 30 years of NOAA records, not a promise. Plant by 05/06 and you're betting against frost in roughly 9 years out of 10. 06/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Nezperce compares
About 116 days separate Nezperce's last and first frost, putting it 39,289 of 40,283 ZIP codes nationally. Within ID, it ranks 228 of 320.
Learn more
zone vs. frost date explains why Zone 6b and Nezperce's frost date answer different questions, and the frost range explains how to read the range around Nezperce's dates instead of trusting one.