A low pressure system will approach western and southern Wyoming throughout the day.  This will create a chance for light snow across western Wyoming and the southern mountains today.  Visibility could be reduced at times and roads could become slick and icy in places across I-80 near the Utah/Wyoming state line, Elk Mountain, and over the Summit between Laramie and Cheyenne.  There will be just a small chance for flurries across southeastern and central Wyoming today and overnight.  Skies will stay cloudy to mostly cloudy statewide.  Temperatures will be noticeably colder and closer to average throughout southern Wyoming, while near or slightly above normal temperatures will be possible for the rest of the state.  Expect daytime highs in the 30's and 40's.  Winds will also increase throughout central and southern Wyoming and become strong by this afternoon and evening.  We could see winds gusting between 35 and 50 mph.  Higher pressure will then build over the area on Thursday.  Expect minimal cloudiness and unseasonably mild temperatures, but winds could still be strong and gusty at times.