North Bend, WA 98145 Frost Dates
Frost dates for North Bend, WA, ZIP 98145
The last spring frost here typically falls around 04/23, about 238 days from today. 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.
Why 04/23 isn't a guarantee
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
North Bend's growing season runs about 193 days, ranking 19,813 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 381 of 700.
Learn more
the frost range explains how to read the range around North Bend's dates instead of trusting one, and local microclimates explains what one yard in North Bend can differ from the 98145 normal.