Written by Theresa Rose on May 9, 2017

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

The past reporting week began with statewide rainfall on Sunday (30th) with lighter precipitation continuing into Monday (1st). The rain turned to snow in far northwest Iowa Sunday night and Monday morning where a brief two inch accumulation was reported at Lester (Lyon County). A very welcome drier period prevailed for the remainder of the week with the exception of some scattered thunderstorms over the northwest one-quarter of the state on Wednesday (3rd) and some very light rain in the Dubuque and Clinton areas on Friday (5th) night. Weekly precipitation totals varied from 0.34 inches at Park View (Scott County) to 1.95 inches at Remsen (Plymouth County). The statewide average precipitation was 0.99 inches or nearly the same as the weekly normal of 0.98 inches. Daytime high temperatures were only in the forties statewide on Sunday (30th) and finally climbed above normal in western Iowa on Friday and almost to normal over far eastern Iowa by Sunday (7th). A freeze was recorded over parts of northeastern Iowa on Wednesday (3rd) morning with a lowest reported temperature of 28 degrees near Elkader. A light freeze was also reported over low-lying areas of central and eastern Iowa on Thursday (4th) morning with a lowest reported temperature of 29 degrees near Chariton. On the other extreme temperatures climbed into the eighties over about the west one-third of the state on Sunday (7th) afternoon with a maximum of 85 degrees at Little Sioux. Temperatures for the week as a whole averaged from one to two degrees below normal over the far west to about six degrees subnormal over the east with a statewide average of 3.6 degrees below normal.