Corn rootworm hatches are expected to continue to either commence or increase as heat unit accumulations continue to grow. High risks for the potential of more widespread and higher larvae populations as a result of higher heat unit accumulations and more favorable soil conditions exist from Kansas into portions of Nebraska, Iowa, Missouri, Illinois, southern Wisconsin, southern lower Michigan, Indiana, and Ohio. More scattered larvae hatches, primarily due to lower heat unit accumulations, exist from eastern Colorado into central Nebraska, eastern South Dakota, northern Iowa, Minnesota, eastern North Dakota, central Wisconsin, lower Michigan, and into southwestern Ontario, Canada. Moderate risks were kept in place across southeast South Dakota, southern Minnesota, and northern Iowa due to recent excessive rainfall which will have at least scattered impacts on corn rootworm hatch and mortality in areas hardest hit or poorly drained. Growers should monitor fields and dig up roots to determine larvae populations locally.