Nehalem, OR 97131 Frost Dates
Frost dates for Nehalem, OR, ZIP 97131
Typically, the last spring freeze lands around 04/02, roughly 217 days out. The first fall frost typically arrives around 11/12, about 223 frost-free days later.
The USDA Plant Hardiness Zone Map puts Nehalem in Zone 8b (15 to 20°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 8b around Nehalem has about 11 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.
The actual range around Nehalem's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/04 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Nehalem compares
Nehalem's growing season runs about 223 days, ranking 12,149 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 169 of 463.
Learn more
zone vs. frost date explains why Zone 8b and Nehalem's frost date answer different questions, and the frost range explains how to read the range around Nehalem's dates instead of trusting one.