North Bend, OR 97459 Frost Dates
Frost dates for North Bend, OR, ZIP 97459
Around 02/21 is the usual last spring frost, about 177 days away. The first fall frost typically arrives around 12/09, about 294 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 15 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 02/21 isn't a guarantee
02/21 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 12/31 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 294 days, ranking 4,261 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 32 of 463.
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 97459 normal.