May to July was the second-wettest crop planting period in Missouri since 1895, according to the University of Missouri Extension. More than 22 inches of rain fell during these months, 10 inches above the normal range, UM Extension Climatologist Pat Guinan said.
The wet season caused delays planting several crops. Guinan said only 80 percent of the soybean crop was planted this year. Flooding in fields also caused nutrient loss that impacted crop yields.