Partly sunny with a high in the twenties News Desk December 29, 2013 High pressure will build in across Wyoming today, bringing drier and colder conditions. Patchy fog will be possible this morning across the Wind River Basin, otherwise most of the area will be under partly cloudy skies. Increasing clouds will occur throughout the day across northern portions, as the moist northwest flow aloft returns. This will produce a slight chance for snow over northwest portions late this afternoon into tonight.