Sea level. Mean sea level (MSL) (abbreviated simply sea level) is an average level of the surface of one or more of Earth's oceans from which heights such as elevations may be measured.
Dates: September - October. Weather: Autumn in Wyoming is a delight. Many locations will see snow in mid-September, but it doesnât get to be real winter until late November. During October and November youâll discover a warm Indian Summer, with cool nights and beautiful changing colors. Early freezes in the fall are common.
Due to its elevation, Wyoming has a relatively cool climate. Above the 6,000 feet level, temperatures rarely exceeds 100Â° F. The warmest parts of the State are the lower portions of the Big Horn Basin, the lower elevations of the central and northeast portions and along the eastern border.