Cold air will continue to invade the state of Wyoming today, which will make temperatures much colder and well below average.  At the same time, an upper-level weather system will be sliding across Colorado.  This will funnel moisture into central and southern Wyoming.  Light to scattered snowfall is expected across central and southern Wyoming today, while there will be just a small chance for flurries or light snow across northern Wyoming.  Roads will remain mainly wet across much of the state into the early afternoon hours.  We will then see roads become slick and slushy across southeastern Wyoming by the late afternoon and evening hours and roads will most likely become icy tonight.  Visibility could also be reduced at times today along I-25 (Colorado state line to Wheatland), I-80 (Nebraska state line to Laramie), and US-85 (Colorado state line to Torrington) due to areas of patchy fog and snow shower activity.  Daytime highs will remain in the 30's and 40's.  There could be a few early flurries or light snow showers on Friday.  Higher pressure will then bring more settled weather to the area by the afternoon and evening hours.