A low pressure system will move across the state of Wyoming today.  Expect cloudy, overcast skies with noticeably colder temperatures statewide.  Highs temperatures will remain in the 30's and 40's.  Scattered rain and snow showers are also expected today, which will then turn to all snow by later this evening and tonight.  With the exception of the higher elevations, roads will stay mainly wet today.  After sunset, roads will then have the potential to freeze and become slick throughout the entire state.  This latest weather system will then slowly move out of the region on Tuesday.  There will be a chance for lingering rain and snow showers, especially early in the day.  Otherwise, expect gradually clearing skies with improving travel conditions.  Temperatures will also be even colder and closer to average.  Another round of rain and snow will arrive by Wednesday, but expect only minimal travel concerns.