Hotter still is the core. In the sun this is thought to be 10 - 20 million degrees. These temperatures are due to the pressure caused by gravity trying to compress the star. It has to be this temperature for fusion of hydrogen to take place.
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).
June through to September are the months when Seattle is most likely to have days with highs in the 80s and lows in the 60s. 1  Days per month in Seattle of at least 60, 70 or 80 Â°F. 2  Days per month on average in Seattle when the minimum temperature drops to 32 or 40 Â°F or below.