An upper-level weather system that has been settled over western portions of the nation will slowly move into the state of Wyoming today.  At the same time, a cold front will also be passing through the area.  Expect cloudy to mostly cloudy skies, breezy to strong winds, and a chance for rain showers and a few thunderstorms.  Temperatures will also be cooler and near or slightly below average statewide.  Daytime highs will remain in the 40's and 50's.  Rain will then mix with and turn to light snow tonight.  The best chance for measurable snowfall across lower elevations will be in northeastern and central Wyoming, where 1-3" could accumulate (mainly on grassy areas) by Thursday morning.  Elsewhere, expect mainly small, if any, accumulations.  However, slick and icy roads and some areas of reduced visibility will be likely throughout the state, including all of I-25, I-80, and I-90, into Thursday morning.  There could be a few more additional flurries or light snow showers in far eastern portions of the state on Thursday morning.  Meanwhile, rain and snow showers will continue for much of the day in southwestern Wyoming.