After a mild day across Wyoming today, expect a strong cold front to reach northern Wyoming by early Tuesday.  Temperatures will fall from the north to the south Tuesday afternoon and into Tuesday night. Expect much colder temperatures and areas of light snow over many areas (especially, central, north and east) behind the front late Tuesday through Wednesday morning. Snowfall of one to three inches will be possible in central, northern and eastern Wyoming by early Wednesday morning. Expect very cold temperatures and more chances for light snow to push south into Wyoming over the weekend and into early next week. Stock growers and travelers should be prepared for the colder temperatures.