The Cheyenne Office of the National Weather Service says strong to severe storms are possible in southeast Wyoming today. Increasing clouds, with a high near 85. Wednesday Night A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Thursday Night A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Wednesday Night A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight.