Written by Theresa Rose on September 9, 2015

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

It was an unseasonably warm and dry week across Iowa. The reporting week began with temperatures slightly above normal on Sunday (30th) and Monday (31st) but was very warm and humid for the remainder of the week. Daytime highs were mostly in the mid to upper eighties across northern Iowa and in the low- to mid-nineties across the south. Temperature extremes varied from Sunday (6th) afternoon highs of 96 degrees at Glenwood and Sidney to a Monday (31st) morning low of 55 degrees at Maquoketa. Temperatures for the week as a whole averaged 10.0 degrees above normal, making this the warmest week of the year. Most of the week’s rain fell from southwest to north central Iowa on Tuesday (1st) night into Wednesday (2nd) morning with just a few southwest Iowa locations receiving over an inch of rain. Bedford reported the most rain with 1.44 inches while much of the northwest and southeast corners of the state recorded no measurable rain. The statewide average precipitation was 0.16 inches while normal for the week is 0.84 inches. This was the driest week in 18 weeks (late April/early May). Locally heavy rain fell Sunday (6th) evening and Sunday night, particularly across central and south central Iowa, but fell too late to be reflected in this week’s crop statistics.