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 temperatures and rainfall will be below normal, with below-normal mountain snows. The stormiest periods will be in late November, mid-December, and mid-January. The coldest temperatures will be in early and late December and mid- to late January.