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.
On average, the warmest days of the year in Seattle occur between July 26 and August 8, with average highs of 76 degrees. These are some of the best days to spend on some of Seattle&#039;s beaches. Alki Beach Park is open from 6 a.m. until 11 p.m.n average, the warmest days of the year in Seattle occur between July 26 and August 8, with average highs of 76 degrees. These are some of the best days to spend on some of Seattle&#039;s beaches. Alki Beach Park is open from 6 a.m. until 11 p.m.