Roy, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roy, a city in Pierce County, Washington.
This Afternoon
60°F
Light Rain Likely
Rain likely after 4pm. Mostly cloudy. High near 60, with temperatures falling to around 56 in the afternoon. South southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Roy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Light Rain Likely | 6 mph SSW | 61% |
| Tonight | 45°F | Light Rain | 8 mph S | 94% |
| Thursday | 59°F | Mostly Sunny | 6 mph SSW | 5% |
| Thursday Night | 42°F | Mostly Cloudy then Chance Light Rain | 3 mph SSE | 49% |
| Friday | 57°F | Light Rain | 2 to 9 mph S | 88% |
| Friday Night | 47°F | Light Rain Likely | 0 to 7 mph SSE | 70% |
| Saturday | 65°F | Mostly Cloudy then Chance Light Rain | 1 mph S | 33% |
| Saturday Night | 49°F | Light Rain | 1 to 16 mph SSW | 87% |
| Sunday | 58°F | Light Rain Likely | 2 to 12 mph SW | 69% |
| Sunday Night | 38°F | Mostly Cloudy | 2 mph SSW | 8% |
| Monday | 58°F | Partly Sunny then Slight Chance Light Rain | 1 mph SW | 21% |
| Monday Night | 44°F | Light Rain Likely | 1 to 8 mph S | 55% |
| Tuesday | 58°F | Light Rain Likely | 8 to 13 mph S | 64% |
| Tuesday Night | 47°F | Light Rain Likely | 3 to 9 mph S | 63% |
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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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 Nov 5, 2026.