Weather Avenue > 
Weather America > 
United States > 
Washington > 
| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 16°C | -12°C | 4°C |
| February | 13°C | -2°C | 6°C |
| March | 21°C | -2°C | 8°C |
| April | 22°C | 1°C | 9°C |
| May | 27°C | 2°C | 12°C |
| June | 28°C | 6°C | 15°C |
| July | 34°C | 10°C | 20°C |
| August | 33°C | 8°C | 19°C |
| September | 32°C | 6°C | 17°C |
| October | 29°C | -1°C | 13°C |
| November | 17°C | -1°C | 8°C |
| December | 16°C | 1°C | 7°C |
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