Columbine seemed to kick off a spate of school shootings in the country in the years since, the deadliest taking place in 2007 when a gunman opened fire on the campus of Virginia Tech University in Blacksburg, Va., killing 32. Sue Klebold recalled the horror of that morning in her interview with Sawyer.
Average Weather in Waterloo Iowa, United States. Waterloo has a humid continental climate with hot summers and no dry season. The temperature typically varies from 12Â°F to 84Â°F over the course of the year, and is rarely below -9Â°F or above 92Â°F. The warm season lasts for 128 days, from May 17 to September 22, with an average daily high temperature above 72Â°F.
Home: Climate Graphs: Iowa : Des Moines. Des Moines's coldest month is January when the average temperature overnight is 11.7Â°F. In July, the warmest month, the average day time temperature rises to 86.0Â°F.The driest month in Des Moines is January with 1.03 inches of precipitation, and with 4.57 inches June is the wettest month..33in. The driest month in Des Moines is January with 1.03 inches of precipitation, and with 4.57 inches June is the wettest month.