Roy, WA Weather & Growing Conditions
Today
74°F
Mostly Sunny
Mostly sunny, with a high near 74. North northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Mostly Sunny | 2 mph NNW | 0% |
| Tonight | 49°F | Mostly Clear | 2 mph N | 0% |
| Sunday | 75°F | Partly Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 47°F | Partly Cloudy | 2 mph N | 0% |
| Monday | 73°F | Partly Sunny | 2 mph NNW | 0% |
| Monday Night | 49°F | Partly Cloudy | 2 mph WNW | 0% |
| Tuesday | 71°F | Partly Sunny | 2 mph W | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 3 mph SW | 4% |
| Wednesday | 69°F | Partly Sunny | 3 mph SW | 5% |
| Wednesday Night | 47°F | Mostly Cloudy | 0 to 3 mph WSW | 5% |
| Thursday | 65°F | Mostly Cloudy then Slight Chance Light Rain | 0 to 5 mph NNE | 18% |
| Thursday Night | 47°F | Slight Chance Light Rain | 1 to 5 mph NE | 20% |
| Friday | 65°F | Partly Sunny | 1 to 6 mph NE | 14% |
| Friday Night | 44°F | Partly Cloudy | 1 to 6 mph E | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Roy, WA
Last spring frost
Apr 11
First fall frost
Oct 30
Growing season
202 days
Hardiness zone
8b
Explore more for Roy, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Mcmillin Rsvr, Wa (15.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.