Roslyn, WA 98068 Frost Dates
Frost dates for Roslyn, WA, ZIP 98068
The last spring frost here typically falls around 05/14, about 259 days from today. The first fall frost typically arrives around 10/17, about 154 frost-free days later.
The USDA Plant Hardiness Zone Map puts Roslyn in Zone 7a (0 to 5°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 7a around Roslyn has about 7 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 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/26 and you're betting against frost in roughly 9 years out of 10. 06/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Roslyn compares
At roughly 154 frost-free days, Roslyn places 34,380 of 40,283 ZIP codes in this dataset. Within WA, it ranks 586 of 700.
Learn more
zone vs. frost date explains why Zone 7a and Roslyn's frost date answer different questions, and the frost range explains how to read the range around Roslyn's dates instead of trusting one.