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 bluish-white or even blue (shorter wavelengths).
Average Weather in September in Sheridan Wyoming, United States. In Sheridan, the month of September is characterized by rapidly falling daily high temperatures, with daily highs decreasing by 14Â°F, from 82Â°F to 69Â°F over the course of the month, and rarely exceeding 93Â°F or dropping below 53Â°F.
1 Overnight temperatures are generally warm with an average low of 20.2 Â°C (68.4 Â°F). 2  In September the range/ variation of daily average temperatures is 6.5 Â°C (11.7 Â°F).  The weather in September is very slightly soggy with occasional rain. Around 179.8mm (7.1in) of H2O accrues across an average of 13 days.