An upper-level weather system will remained settled over the state of Wyoming through at least the end of the work week.  Expect cloudy to mostly cloudy skies, breezy to strong winds, and colder than normal temperatures throughout the state today.  Daytime highs will remain in the 30's and 40's.  Light to moderate snowfall is expected in central and southern Wyoming today.  Slick, icy roadways, blowing snow, and areas of reduced visibility will also be possible.  For northern Wyoming, expect just a small chance for a few lingering flurries or light snow showers with no major travel concerns.  By tonight, moderate to heavy snow will be likely across far southeastern Wyoming.  Poor visibility, blowing and drifting snow, and hazardous driving conditions are expected across I-25 (Colorado state line to Wheatland), I-80 (Nebraska state line to Arlington), and US-85 (Colorado state line to Torrington).  Expect 6-9" of snow across these areas by Friday morning, with up to 14" over higher elevations and the mountains.  For the rest of central and southern Wyoming, expect light to moderate snowfall, reduced visibility, and slick, icy travel conditions.  We will see generally 2-6" of snow by Friday morning.  Light to moderate snowfall and colder than normal temperatures continue in central and southern Wyoming on Friday.  Snow showers will develop in northern portions of the state by Friday afternoon and evening.