Royal City, WA
Climate overview — based on NOAA 1991-2020 normals from SMYRNA, WA US.
Year-round temperatures (°F)
Avg high
Avg low
Climate summary
Royal City has an annual average temperature of 53.4°F with about 0 inches of precipitation per year. The warmest month is July (average high 92.9°F), and the coldest is January (average low 25.5°F).
Annual swing
43.5°F
warmest to coldest month
Best time to visit Royal City
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Royal City's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1950s | 85 | |
| 1960s | 47 | |
| 1970s | 69 | |
| 1980s | 68 | |
| 1990s | 51 | |
| 2000s | 46 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 40.4°F | 25.5°F | 32.9°F | in | — | — |
| February | 48.0°F | 27.6°F | 37.8°F | in | — | — |
| March | 58.2°F | 32.8°F | 45.5°F | in | — | — |
| April | 66.6°F | 38.9°F | 52.8°F | in | — | — |
| May | 77.0°F | 46.3°F | 61.7°F | in | — | — |
| June | 83.8°F | 54.5°F | 69.1°F | in | — | — |
| July | 92.9°F | 59.2°F | 76.1°F | in | — | — |
| August | 91.7°F | 57.5°F | 74.6°F | in | — | — |
| September | 82.0°F | 48.6°F | 65.3°F | in | — | — |
| October | 66.6°F | 38.5°F | 52.6°F | in | — | — |
| November | 49.8°F | 30.5°F | 40.1°F | in | — | — |
| December | 39.6°F | 25.7°F | 32.6°F | in | — | — |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when