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Iowa prelimary weather summary

By Staff | Jun 27, 2017


State Climatologist

The week began with unseasonably hot weather with temperatures averaging ten or more degrees above normal on June 11, 12 and 13.

Temperatures moderated slightly at mid-week but remained well above normal through June 17. Temperature extremes for the week varied from highs of 97 degrees at Little Sioux on June 13 and at Lamoni on June 15 to June 18 with morning lows of 51 degrees at Chariton and Mount Ayr.

Temperatures for the week as a whole averaged 8.1 degrees above normal.

Showers and thunderstorms were scattered across the state every day. Many areas received some much needed rainfall but a few, mainly in northwest, south central and southeast Iowa saw only light amounts.

Weekly rain totals varied from 0.21 inches at Indianola to 4.65 inches at Corning. The statewide average rainfall was 1.40 inches while normal for the week is 1.19 inches. There were isolated severe storms on June 11, 12 and 13. The most widespread severe weather occurred across about the southeast one-half of Iowa on June 15 with very large hail reported in Franklin, Marion and Page counties. High winds raked the far west/southwest portions of Iowa on June 16 while there were more reports of very large hail from Appanoose and Muscatine counties on June 17.

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