Canadian high pressure will be settled over the state of Wyoming today.  We will see sunny to mostly sunny skies, mainly dry weather conditions and light to breezy winds statewide.  Temperatures, however, will be very cold and well below normal.  Expect daytime highs in the teens and 20's.  A cold front and weather system will then approach the region throughout the day on Tuesday.  Expect thickening clouds and breezy to gusty winds.  Temperatures will also become warmer and near or slightly above average.  Light snow will be possible in far northern Wyoming by the late evening hours and then continue to develop throughout the rest of the state by early Wednesday morning.  Light snow or brief snow showers and colder temperatures will be found statewide on Wednesday.