The Simple Answer :   The color of a star's visible light indicates its surface temperature: a relatively cool star glows red (longer wavelength), and very hot ones glow â¦ bluish-white or even blue (shorter wavelengths).
Over the course of the year, the temperature in Shetland typically varies from 37Â°F to 59Â°F and is rarely below 30Â°F or above 63Â°F. The warm season lasts for 82 days, from June 24 to September 14, with an average daily high temperature above 55Â°F. The hottest day of the year is August 6, with an average high of 59Â°F and low of 52Â°F. The cool season lasts for 133 days, from November 26 to April 8, with an average daily high temperature below 46Â°F.
The average temperature in Lillehammer in August is mild at 14.5 Â°C (58.1 Â°F). Afternoons can be warm with average high temperatures reaching 20 Â°C (68 Â°F). Overnight temperatures are generally a little cool with an average low of 9 Â°C (48.2 Â°F). The average daily temperature range/ variation in August is 11 Â°C (19.8 Â°F). The weather in August is dryish with rain periodically. Just 87mm (3.4in) of fluid is deposited during an average of 17 days. In August the blue above Lillehammer is slightly fair having on balance an unexceptional 5:17 of blazing solar radiation per day. The shortest day is 14:24 long and the longest day is 17:11 long with an average length of 15:49.