A fast-moving weather disturbance and cool front will move across northern, central, and eastern parts of Wyoming today.  Expect cloudy to mostly cloudy skies, cooler temperatures, and a chance for rain (a rain/snow mix in northeastern Wyoming) and possibly a few thunderstorms.  There will also be a chance for patchy fog later tonight through Saturday morning, mainly across southeastern portions of the state.  For southwestern Wyoming, expect partly to mostly sunny skies, mild temperatures, and mainly dry weather conditions.  An upper-level weather system will then slowly move into the region on Saturday and Sunday.  We can expect cloudy to mostly cloudy skies with rain, mountain snow, and possibly a few thunderstorms statewide.  Temperatures will also remain cool and near or slightly below normal during this time.  Even cooler and more unsettled weather will arrive on Monday.