Most have been in the 30s and 40s. One at 16 in 2004. Now it looks like this one will be much, much colder than that, probably not breaking 0 degrees in des moines, high of minus 2. Very cold and factor in wind chill, even colder. Subzero temperatures and wind chill, 30 below zero. Its not just iowa, the Air Temperatures for upper, northern plains, subzero temperatures through tuesday and wednesday for rapids city, omaha, chicago as well. Minus 10 waking up on tuesday morning. That Cold Air gets as far south as texas. Looking at temperatures in single digits and teens for lubbock, dallas, austin. Teens by tuesday and wednesday