Winlock, WA 98538 Frost Dates
When can you plant in Winlock, WA?
The last spring frost here typically falls around 04/05, about 220 days from today. The first fall frost typically arrives around 10/25, about 196 frost-free days later.
Zone 8a (10 to 15°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 Winlock, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Winlock before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/05 is the middle of 30 years of NOAA records, not a promise. Plant by 03/12 and you're betting against frost in roughly 9 years out of 10. 05/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Winlock compares
Winlock's growing season runs about 196 days, ranking 18,986 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 348 of 700.
Learn more
the frost range covers how to read the range around Winlock's dates instead of trusting one. local microclimates covers what one yard in Winlock can differ from the 98538 normal.