The featured chart presents the yearly maximum heat index and date of maximum for Des Moines since 1935. This year's maximum barely exceeded 100 degrees and would be one the lowest minimums on record if it stood for the rest of the year. But it is only the second week of July and as the bottom chart shows, most years experience its hottest heat index sometime in July and August. Today looks to be a very hot day with heat index values for Des Moines expected in the 100s.

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Tags:   heatindex