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Average Temperatures in Seattle, Washington, Usa

  • The annual average temperature in Seattle, Washington, Usa is quite mild at 11.5 degrees Celsius (52.7 degrees Fahrenheit).
  • Average monthly temperatures have a variation of 13.5 C (24.3F) which is a low range.
  • The range/ variation of daily mean temperatures is 7.8 C (14 F).
  • August is the warmest month (somewhat warm) with a mean temperature of 18.7 degrees Celsius (65.66 degrees Fahrenheit).
  • January is the coolest month (cool) with an average 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
maximum temperature iconAverage 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 iconAverage 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)
minimum temperature iconAverage 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

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).

Average Temperatures Nearby Seattle, Washington


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