Roslyn, WA Weather & Growing Conditions
This Afternoon
66°F
Sunny
Sunny. High near 66, with temperatures falling to around 64 in the afternoon. Northwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Sunny | 8 mph NW | 0% |
| Tonight | 48°F | Mostly Clear | 7 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 5 mph W | 0% |
| Saturday Night | 50°F | Mostly Clear | 5 mph NW | 0% |
| Sunday | 71°F | Sunny | 5 mph W | 0% |
| Sunday Night | 50°F | Mostly Clear | 5 mph NW | 0% |
| Monday | 66°F | Sunny | 3 to 8 mph NW | 0% |
| Monday Night | 44°F | Partly Cloudy | 7 mph NW | 0% |
| Tuesday | 59°F | Mostly Sunny | 5 to 8 mph NW | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 9 mph NW | 0% |
| Wednesday | 58°F | Mostly Sunny | 3 to 8 mph NW | 1% |
| Wednesday Night | 45°F | Mostly Cloudy | 5 mph NW | 4% |
| Thursday | 60°F | Partly Sunny | 5 mph S | 11% |
| Thursday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph NW | 15% |
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 Sep 19, 2026.