Washington Climate: Weather by Month and Best Time to Visit
Best months for Washington: May, October, September, April.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 9°C | -2°C | 40 mm | 5 | – | – | 6.0 |
| February | 12°C | 0°C | 44 mm | 6 | – | – | 6.4 |
| March | 17°C | 3°C | 36 mm | 6 | – | – | 7.5 |
| April | 21°C | 7°C | 19 mm | 4 | – | – | 8.4 |
| May | 26°C | 12°C | 10 mm | 2 | – | – | 8.8 |
| June | 32°C | 17°C | 3 mm | 1 | – | – | 8.1 |
| July | 35°C | 21°C | 4 mm | 1 | – | – | 7.3 |
| August | 34°C | 20°C | 6 mm | 2 | – | – | 7.5 |
| September | 30°C | 15°C | 11 mm | 2 | – | – | 8.6 |
| October | 23°C | 8°C | 19 mm | 3 | – | – | 8.7 |
| November | 15°C | 2°C | 22 mm | 3 | – | – | 7.4 |
| December | 9°C | -2°C | 34 mm | 5 | – | – | 6.0 |