FrostDateCheck

Nooksack, WA 98228 Frost Dates

When can you plant in Nooksack, WA?

Zone 8b

Around 04/24 is the usual last spring frost, about 239 days away. 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

About 9 weeks of growing season left in Nooksack before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.

The actual range around Nooksack's last frost

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

At roughly 190 frost-free days, Nooksack places 21,209 of 40,283 ZIP codes in this dataset. Within WA, it ranks 401 of 700.

Learn more

the frost range covers how to read the range around Nooksack's dates instead of trusting one. local microclimates covers what one yard in Nooksack can differ from the 98228 normal.