The coolest stars are the red dwarfs/red giants, with surface temperatures of 3,500 Kelvin or less. As the surface temperature gets hotter, the color of the star turns orange, and then yellow-orange, and then yellow, yellow-white, and then around 5,800 Kelvin it appears white.
In most years, Seattle averages a daily maximum temperature for September that's between 69 and 73 degrees Fahrenheit (20 to 23 degrees Celsius). The minimum temperature usually falls between 52 and 55 Â°F (11 to 13 Â°C). The days at Seattle begin to cool down quickly during September.
There is very little rain in this season, with a lot of very hot, dry days expected, and absolutely no fog or snow predicted, so don't expect any freak turns for the worst if you're in Seattle in July. If hot and sunny weather is what you're looking for, Seattle in July is the place to be. The average daily temperature expected in Seattle in this month is 23 C (73 F) , dropping to an average temperature of 13 C (55 F) .