Iowa Preliminary Weather Summary

Written by Theresa Rose on April 16, 2019


Provided by Justin Glisan, Ph.D., State Climatologist Iowa Department of Agriculture and Land Stewardship

Iowa’s northeastern half was wetter than normal while the southwestern half was unseasonably dry for the reporting period. Temperatures were a few degrees below average in northern Iowa with near to slightly above normal moving south.

The week started off warm with highs on Monday (8th) reaching into the mid to upper 70s across much of Iowa; lower 80s were reported in southwestern Iowa. On Tuesday (9th) rain showers formed across a northwest to southeast swath of Iowa. Over 40 stations reported totals between 0.50 – 1.00 inch; Marshalltown (Marshall County) observed 1.04 inches. Wednesday (10th) began a stretch of active weather statewide. Showers and a few thunderstorms gradually moved through northeastern Iowa and out of the state late afternoon. As the day progressed, a strong Colorado low pressure moved towards Iowa bringing very windy conditions to the region. Isolated severe storms raced out of southwestern Iowa overnight into Thursday (11th) with a few reports of hail and high winds.

Much of Iowa’s northern three-quarters received measurable rainfall; two-day totals were highest in northwest Iowa with many stations reporting between 1.00 to 1.50 inches. Cooler and continued windy conditions were reported on Friday (12th) as cold air moved into Iowa behind the exiting low.

Daytime highs were 15 – 20 degrees below average, generally in the upper 30s into the mid 40s. A relatively quiet pattern set up over the weekend. Highs on Saturday (13th) varied from the 40s in the north to mid 50s across the state’s southern third. Overnight lows into Sunday (14th) were in the mid to upper 20s. Red Oak (Montgomery County) and Shenandoah (Fremont County) observed the week’s high of 81 degrees on the 8th.

Little Sioux (Harrison County) reported a low of 18 degrees on the 14th. Dubuque Lock and Dam (Dubuque County) reported the highest rainfall total of the week at 1.85 inches. Four-inch soil temperatures were in the low to mid 40s north to south as of Sunday.