Upcoming Iowa caucus night could be coldest ever. CNN meteorologist ex… CNN 0 166 01.13 03:28 https://www.youtube.com/watch?v=YRxsumcLVyM + 173 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 15 Upcoming Iowa caucus night could be coldest ever. CNN meteorologist explains