Average annual temperatures for Washington (11°C/52°F) are slightly below the average for United States (13°C/55°F).
Average annual rainfall for Washington (952mm/37 inches) is slightly below the average for United States (1,039mm/41 inches).
August is the hottest or warmest month in Washington, with an average maximum temperate of 27°C/81°F.
December is the coolest or coldest month in Washington, with an average minimum temperate of 1°C/34°F.
November is the wettest or most rainy month in Washington, with an average rainfall of 141mm/6 inches.
July is the driest or least rainy month in Washington, with an average rainfall of 13mm/1 inches.
Vancouver is the hottest or warmest place in Washington, with an average maximum temperate of 12°C/54°F.
Spokane is the coldest place in Washington, with an average maximum temperate of 8°C/46°F.
Vancouver is the most rainy or wettest place in Washington, with an average annual rainfall of 1,188mm/47 inches.
Yakima is the least rainy or driest place in Washington, with an average annual rainfall of 204mm/8 inches.
| Place | Min Temp | Max Temp | Avg Temp | Rainfall |
|---|---|---|---|---|
| Auburn | 8 | 16 | 12 | 1,140 |
| Bellevue | 8 | 16 | 12 | 1,094 |
| Bellingham | 7 | 15 | 11 | 991 |
| Burien | 8 | 16 | 12 | 1,140 |
| Everett | 7 | 15 | 11 | 959 |
| Federal Way | 8 | 16 | 12 | 1,140 |
| Kent | 8 | 16 | 12 | 1,140 |
| Kirkland | 8 | 16 | 12 | 1,094 |
| Lakewood | 8 | 16 | 12 | 1,140 |
| Marysville | 7 | 15 | 11 | 959 |
| Olympia | 8 | 15 | 11 | 1,133 |
| Redmond | 8 | 16 | 12 | 1,094 |
| Renton | 8 | 16 | 12 | 1,094 |
| Sammamish | 8 | 16 | 12 | 1,094 |
| Seattle | 8 | 16 | 12 | 1,094 |
| Shoreline | 8 | 16 | 12 | 1,094 |
| South Hill | 8 | 16 | 12 | 1,140 |
| Spokane | 1 | 15 | 8 | 586 |
| Spokane Valley | 1 | 15 | 8 | 586 |
| Tacoma | 8 | 16 | 12 | 1,140 |
| Vancouver | 8 | 17 | 12 | 1,188 |
| Yakima | 4 | 19 | 11 | 204 |