Roy, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roy, a city in Pierce County, Washington.
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. South southwest wind around 2 mph.
7-day forecast for Roy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 2 mph SSW | 0% |
| Saturday | 75°F | Mostly Cloudy | 2 mph NW | 0% |
| Saturday Night | 49°F | Partly Cloudy | 1 mph N | 0% |
| Sunday | 76°F | Mostly Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 48°F | Partly Cloudy | 0 to 3 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 | 1% |
| Tuesday | 70°F | Partly Sunny | 0 to 3 mph NW | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 0 to 3 mph WSW | 1% |
| Wednesday | 69°F | Partly Sunny | 0 to 3 mph NNW | 3% |
| Wednesday Night | 48°F | Partly Cloudy | 0 to 3 mph NNE | 5% |
| Thursday | 71°F | Partly Sunny then Slight Chance Light Rain | 0 to 3 mph NNW | 15% |
| Thursday Night | 50°F | Slight Chance Light Rain | 3 mph WSW | 24% |
| Friday | 68°F | Slight Chance Light Rain | 1 to 7 mph WSW | 23% |
Forecast source: National Weather Service (api.weather.gov) for Roy (46.990, -122.541). Updated through the day.
Growing snapshot for Roy
Last spring frost
Apr 11
First fall frost
Oct 30
Growing season
202 days
Hardiness zone
8b
More local growing data for Roy: nearby ZIP 98580 weather · frost dates · planting calendar · Washington frost dates
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Home
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Climate data from the nearest NOAA station, Mcmillin Rsvr, Wa (15.8 mi from Roy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.