Nooksack, WA 98231 Frost Dates
Frost dates for Nooksack, WA, ZIP 98231
The last spring frost here typically falls around 04/24, about 239 days from today. The first fall frost typically arrives around 10/29, about 190 frost-free days later.
Zone 8b (15 to 20°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 Nooksack, not a forecast for this year.
What to do before the first frost
Zone 8b around Nooksack 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 04/24 isn't a guarantee
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Nooksack compares
About 190 days separate Nooksack's last and first frost, putting it 21,210 of 40,283 ZIP codes nationally. Within WA, it ranks 402 of 700.
Learn more
the frost range explains how to read the range around Nooksack's dates instead of trusting one, and local microclimates explains what one yard in Nooksack can differ from the 98231 normal.