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.
Average Temperatures for Wyoming in September. Average temperatures for September at cities, towns, parks and lakes throughout Wyoming are listed below in degrees Fahrenheit and Celsius. The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US National Climatic Data Center.