An arctic cold front will approach the state of Wyoming during the day today.  This will cause clouds to thicken throughout the state.  Winds will also be strong and gusty into the early afternoon hours, with gusts between 30 and 45 mph.  Temperatures across northern Wyoming will stay cold and below normal today, with daytime highs in the 20's.  Daytime highs (30's) will be reached early in central and southeastern Wyoming and will then begin to drop by the afternoon.  Light snow will develop across far northern parts of the state by the late morning/early afternoon hours and will then spread to central and southeast Wyoming by the evening and overnight hours.  There will also be a chance for patchy freezing fog, mainly across southeastern portions of the state, late tonight into early Friday morning.  Light snow and some areas of patchy freezing fog will reduce visibility at times and roadways will also become slick and icy, including all of I-90 and I-25 as well as portions of I-80.  Meanwhile, conditions stay mainly quiet and settled across far southwestern portions of the state today and tonight.  Temperatures across the southwest will stay mild and close to average (30's and 40's).  There could be a few lingering flurries across southeastern Wyoming on Friday morning.  Otherwise, expect developing sunshine, strong winds, and mainly dry weather conditions.  Noticeably colder temperatures will be found across central and southeastern Wyoming, while seasonal temperatures continue across much of western Wyoming.