North Bend, WA 98185 Frost Dates
Frost dates for North Bend, WA, ZIP 98185
Typically, the last spring freeze lands around 04/23, roughly 238 days out. The first fall frost typically arrives around 11/01, about 193 frost-free days later.
The USDA Plant Hardiness Zone Map puts North Bend in Zone 9a (20 to 25°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 9a around North Bend 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
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How North Bend compares
About 193 days separate North Bend's last and first frost, putting it 19,818 of 40,283 ZIP codes nationally. Within WA, it ranks 386 of 700.
Learn more
zone vs. frost date explains why Zone 9a and North Bend's frost date answer different questions, and the frost range explains how to read the range around North Bend's dates instead of trusting one.