Written by Theresa Rose on May 5, 2015

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

Temperatures were near seasonal norms with afternoon highs in the sixties and seventies through Saturday with much warmer weather arriving on Sunday (3rd) when highs were in the mid-seventies northeast to upper-eighties over the northwest portion of Iowa. Temperature extremes ranged from a Thursday (30th) morning low of 30 degrees at Elkader to a Sunday (3rd) afternoon high of 89 degrees at Little Sioux. Temperatures for the week as a whole averaged near normal over the southeast to about four degrees above normal over the northwest corner of Iowa with a statewide average of 2.3 degrees above normal. Meanwhile dry weather prevailed over most of Iowa from Monday (27th) through Thursday (30th). Light rain was scattered across the west one-half of the state on Friday (1st) with showers and thunderstorms over the south one-half of Iowa on Saturday (2nd). Showers and thunderstorms were more widespread on Sunday (3rd) evening and night, but came too late to be reflected in this week’s report. Weekly rain totals varied from none over much of the northeast one-quarter of Iowa, and along the Minnesota border, to 0.91 inches near Hastings in Mills County of southwest Iowa. The statewide average precipitation was only 0.13 inches while normal for the week is 0.98 inches. The warmer weekend weather pushed soil temperatures at the four inch depth to the low- to mid-sixties as of Sunday (3rd).