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.
Annual Weather Summary: November 2016 to October 2017. Winter will be warmer than normal, with below-normal precipitation and near- to below-normal snowfall. The coldest periods will be in early to mid-January, from late January into early February, and in mid-February. The best chances for snow will be in late November, mid-February, and mid-March.