Written by Theresa Rose on May 23, 2016

By Harry Hillaker, State Climatologist, Iowa Department of Agriculture & Land Stewardship

The past reporting week was mostly on the cooler and drier side of normal. Temperatures were below normal statewide through Saturday (21st) morning with mild days and cool nights. Temperatures climbed into the seventies statewide on Saturday (21st) afternoon and into the eighties over most of Iowa on Sunday (22nd). Temperature extremes varied from a Wednesday (18th) morning low of 30 degrees at Elkader to a Sunday (22nd) afternoon high of 87 degrees at Le Claire. Temperatures for the week as a whole averaged one to three degrees below normal across northern Iowa to three to six degrees subnormal over the south where daytime cloud cover was more frequent. The statewide average temperature for the week was 3.5 degrees below normal. Light rain fell over about the southern one-third of Iowa on Monday (16th) and parts of the southeast one-half of the state on Tuesday (17th). There were a few, isolated, very light showers scattered across small areas of southern and western Iowa on Thursday, Friday, and Saturday. Randolph in Fremont County reported the most rain for the week with 0.52 inches while no rain was reported over parts of northwest, north central, west central, central and east central Iowa. The statewide average rainfall for the week was only 0.07 inches while normal for the week is 1.05 inches. Soil temperatures at the four inch depth were averaging in the low to mid-sixties over most of Iowa as of Sunday (22nd).