Roslyn, WA 98925 Frost Dates
Frost dates for Roslyn, WA, ZIP 98925
Typically, the last spring freeze lands around 05/14, roughly 259 days out. The first fall frost typically arrives around 10/17, about 154 frost-free days later.
Roslyn sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a 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.
The actual range around Roslyn's last frost
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 34,381 of 40,283 ZIP codes in this dataset. Within WA, it ranks 587 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.