Roslyn, WA Weather & Growing Conditions
Today
43°F
Mostly Sunny
Mostly sunny. High near 43, with temperatures falling to around 37 in the afternoon. Southwest wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 43°F | Mostly Sunny | 3 mph SW | 9% |
| Tonight | 33°F | Rain And Snow Showers | 2 to 7 mph W | 90% |
| Thursday | 38°F | Chance Rain And Snow Showers then Partly Sunny | 2 to 8 mph W | 33% |
| Thursday Night | 32°F | Mostly Cloudy then Chance Snow Showers | 5 mph W | 50% |
| Friday | 39°F | Chance Snow Showers then Rain And Snow Showers Likely | 2 mph W | 63% |
| Friday Night | 38°F | Rain Showers Likely | 3 mph NW | 63% |
| Saturday | 44°F | Partly Sunny then Slight Chance Rain Showers | 3 to 7 mph E | 15% |
| Saturday Night | 35°F | Rain Showers Likely then Rain And Snow Showers Likely | 3 to 7 mph NE | 68% |
| Sunday | 39°F | Rain And Snow Showers Likely | 3 to 7 mph W | 68% |
| Sunday Night | 33°F | Slight Chance Rain And Snow Showers then Mostly Cloudy | 5 mph NW | 15% |
| Monday | 39°F | Chance Snow Showers | 3 mph E | 29% |
| Monday Night | 35°F | Chance Snow Showers | 2 mph NE | 46% |
| Tuesday | 41°F | Chance Rain And Snow Showers | 2 mph NE | 46% |
| Tuesday Night | 37°F | Chance Rain Showers | 3 mph NE | 45% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Roslyn, WA
Last spring frost
May 9
First fall frost
Oct 6
Growing season
151 days
Hardiness zone
7a
Explore more for Roslyn, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Easton, Wa (10.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.