Roy, WA Weather & Growing Conditions
Overnight
47°F
Mostly Cloudy
Mostly cloudy, with a low around 47. Southeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Mostly Cloudy | 1 mph SE | 0% |
| Saturday | 74°F | Partly Sunny | 2 mph NNW | 0% |
| Saturday Night | 48°F | Mostly Clear | 1 mph N | 0% |
| Sunday | 75°F | Partly Sunny | 2 mph N | 0% |
| Sunday Night | 47°F | Mostly Clear | 2 mph N | 0% |
| Monday | 73°F | Mostly Sunny | 0 to 3 mph NW | 0% |
| Monday Night | 49°F | Partly Cloudy | 0 to 3 mph NNW | 0% |
| Tuesday | 70°F | Partly Sunny | 2 mph NW | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 2 mph WSW | 1% |
| Wednesday | 70°F | Partly Sunny | 3 mph W | 6% |
| Wednesday Night | 48°F | Mostly Cloudy | 0 to 3 mph NW | 6% |
| Thursday | 66°F | Mostly Cloudy then Slight Chance Light Rain | 0 to 5 mph N | 19% |
| Thursday Night | 47°F | Slight Chance Light Rain | 0 to 5 mph ENE | 19% |
| Friday | 66°F | Partly Sunny | 0 to 6 mph WNW | 11% |
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.