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> Usa > Seattle, Washington > Temperatures
Average Temperatures in Seattle, Washington, Usa
- The mean temperature in Seattle, Washington, Usa is quite mild at 11.5 degrees Celsius (52.7 degrees Fahrenheit).
- Average monthly temperatures vary by 13.5 °C (24.3°F) which is a low range.
- The average daily temperature range/ variation is 7.8 °C (14 °F).
- August is the warmest month (somewhat warm) with an average temperature of 18.7 degrees Celsius (65.66 degrees Fahrenheit).
- January is the coldest month (cool) with a mean temperature of 5.2 degrees Celsius (41.36 degrees Fahrenheit).
Average Temperatures Table for Seattle, Washington
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Average Max Temperature °C ( °F) | 7.8 (46) | 10.3 (50.5) | 12.1 (53.8) | 14.5 (58.1) | 17.9 (64.2) | 20.9 (69.6) | 23.4 (74.1) | 23.4 (74.1) | 20.4 (68.7) | 15.6 (60.1) | 10.8 (51.4) | 7.9 (46.2) | 15.4 (59.8) | |
 | Average Temperature °C ( °F) | 5.2 (41.4) | 6.8 (44.2) | 8.1 (46.6) | 10.2 (50.4) | 13.4 (56.1) | 16.3 (61.3) | 18.5 (65.3) | 18.7 (65.7) | 16 (60.8) | 11.9 (53.4) | 7.9 (46.2) | 5.3 (41.5) | 11.5 (52.7) | |
 | Average Min Temperature °C ( °F) | 2.4 (36.3) | 3.3 (37.9) | 4.2 (39.6) | 5.9 (42.6) | 8.8 (47.8) | 11.8 (53.2) | 13.6 (56.5) | 14 (57.2) | 11.6 (52.9) | 8.3 (46.9) | 5 (41) | 2.8 (37) | 7.6 (45.8) |
Seattle, Washington Average Temperatures Chart
The average temperature charts use a fixed scale so that you can easily compare temperatures between two or more locations. Simply line up the charts in separate tabs in your browser and toggle between tabs to visualise the differences. The charts have major grid lines at intervals of 10 °C on the left axis corresponding with intervals of 18 °F on the right axis. Minor gridlines mark intervals of 2.5 °C and 4.5 °F. The charts show the relationship between the Celsius and Fahrenheit measuring scales. Locations in the northern hemisphere run from January to December and in the southern hemisphere from July to June so that the middle of the chart always corresponds with the high sun period (for the hemisphere).
